Scientists have proposed more than two dozen ways to define species. One commonly used definition, called the biological species concept, holds that populations belong to the same species if they can contribute genes to a common gene pool. Reproductive barriers block gene flow between different species. Gene flow between populations tends to hold the gene pool of a species together. Three of the most prominent definitions of species are the biological species concept, the phylogenetic species concept, and the morphological species concept. For each characteristic, identify the a
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Complete question:
Scientists have proposed more than two dozen ways to define species. One commonly used definition, called the biological species concept, holds that populations belong to the same species if they can contribute genes to a common gene pool. Reproductive barriers block gene flow between different species. Gene flow between populations tends to hold the gene pool of a species together.
Part A - Comparing species definitions
Three of the most prominent definitions of species are the biological species concept, the phylogenetic species concept, and the morphological species (morphospecies) concept.
Drag each characteristic to the appropriate bin based on the species concept(s) to which it applies → You will find this in the attached files
Answer:
Not applicable for extinct species → Biological Based on evolutionary history → Phylogenetic Relies on similarities in structure → Morphological Accommodates asexual reproduction / Species acceptance criteria can be subjective → Morphological and PhylogeneticUsed by scientists in classification → Morphological, Phylogenetic, and BiologicalExplanation:
The biological concept states that species are population groups that -in a real or potential way- can mate and reproduce, but are reproductively isolated from other groups.
Individuals belonging to a species cannot reproduce with members of other species.
This biological concept has limitations. Its application might present difficulties in concern with asexual reproduction species, such as bacteria, rotifer, cnidarians, plants, and etcetera.
Besides, this concept cannot be applied to the past because it is difficult to deduce reproductive capability between extinct species.
Finally, this concept is not adequate concerning hybridization zones, something to be expected considering evolutionary processes. This is the reason why it has been less accepted by botanists, as some plant species hybridize with other species.
The phylogenetic species concept defines species on a determined time and through time, and these are the horizontal and vertical species concepts, respectively. The species group is considered to be the less inclusive monophyletic group.
According to the phylogenetic concept, a species is a monophyletic group whose organisms share synapomorphies.
The establishment of species relies on molecular markers.
The morphological species concept defines species according to the shared morphological characteristics shared by all the members of the species. It is a descriptive method to separate species.
When a group differs considerably at a morphological level from another group, it is defined as a different species.
Some limitations might emerge from this species concept. It does not consider variability among individuals,
Individuals of the same species might be polymorphic, exhibiting morphological differences between organisms. These individuals would be considered to be different species following the morphological concept. Some different species might be morphologically similar, despite being different. These species might be considered as one following the morphological concept.
Related Questions
What type of pollution may result from a volcanic eruption or landslide? (Please don’t put any links!!)
A) Microbiological pollution
B) Nutrient pollution
C) Suspended particle pollution
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Answer:
suspended particle pollution
Explanation:
Volcanic eruptions and landslides cause excess soil and rocks fall into waterways.
The type of pollution may result from a volcanic eruption or landslide is suspended particle pollution, i.e., option C.
What is suspended particle pollution?Particulate matter in suspended form is microscopic solid or liquid matter suspended in the Earth's atmosphere.
It is also known as particulate matter or particulates. Particulate matter is the accumulation of all solid and liquid particles suspended in air, many of which are dangerous.
This is the type of pollution may result from a volcanic eruption or landslide is suspended particle pollution.
Thus, the correct option is C.
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There are 46 chromosomes in a human skin cell. How many chromosomes in a human egg cell?
A. 92
B. 23
C. 46
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Answer:
A maybe
Explanation:
Four different blood types are found in human populations because of _______________ and _______________.
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Answer:
of your body's natural defences and presence or absence of certain antigens
Explanation:
mark me as brainliest if it helped you
Which of the following is important to generating heat?
Friction
Chemical reactions
Sunlight
O
All of the above
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sunlight
Explanation:
without sunlight we can't live. sunlight is very important in our daily life.
What proteins are involved to produce eyes color?
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Answer:
yurrrrrrrrrrrrrrrrrrrrrrrrr
Explanation:
Answer:
The protein produced from the OCA2 gene, known as the P protein, is involved in the maturation of melanosomes, which are cellular structures that produce and store melanin. The P protein therefore plays a crucial role in the amount and quality of melanin that is present in the iris.
Explanation:
Question 4
Mitosis maintains complex organisms by which of the following processes?
A The removal of waste from the body
B The exchange of gas with the environment
C The formation of sperm and egg
D The healing of a cut after an injury
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Explanation:
option c is the correct as mitosis helps to create baby .
4. A disease kills all the rabbits in the ecosystem shown in the food web. What
population will be most harmed by the loss of this species? (S7L4c)
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Answer: hares
Explanation: don’t be so sure tho i only think so
Suggest why having only very few leaves could be both an advantage and a disadvantage to a plant
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I need help in writing an essay about the rise of global temperatures over the past century
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Answer:
Essay about the rise of global temperatures over the past century.
Explanation:
The rise of global temperatures over the past century is the major issue which occurs due to human activities. The use of fossil fuels in vehicles releases huge amount of carbondioxide gas in the air while burning. Carbondioxide gas is a green house gas which blocks the reflected solar radiation to go away in the space. These solar radiation remains in the surface which increases the surface temperature of the earth. This rising in the surface temperature is responsible for the melting of glaciers that leads to the rise of sea level which is a threat for coastal regions. This melting of glaciers also causes floods in the regions so that's why the it is a major issue.
 please answer quick and correctly
The rest of teh choices for number 3 is blood and carbon dioxide and for 6 the choices are to transport gases to protect internal organs to control movement or to transport fats
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Answer:
Yes, you are right for both.
What is an ion in your own words but be more detailed about what you say.
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Clownfish and sea anenome: the clownfish is protected and has a home. The sea
anemone gets nothing in return. What type of relationship is this?
parasitism
commensalism
carry capacity
mutualism
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Answer:
mutualism
Explanation:
Explain why it is incorrect to state the individuals can "adapt” to their environments
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Evolution does not occur when an organism adapts to its surroundings.A sexually reproducing creature must mate with other members of its species even though an individual organism may be more adapted to its environment. Therefore, by definition, it is not a new species.
What would happen if living things didn't evolve or adapt to their surroundings?
However, extinction is likely to occur if conditions change faster than a species can adapt and if individuals from that species lack the characteristics necessary to live in the new environment. To be able to survive, all species must be able to adapt to their environment.This entails adapting in order to survive the ecosystem's climatic conditions, predators, and other species that compete with them for resources like food and habitat. Natural selection is the process that results in this.Natural selection causes a species' nature to progressively change so that it can fit into the niche.A species can persist for a very long time before going extinct if it becomes extremely well adapted to its habitat and if the environment does not change.Each environment that an organism inhabits is distinct from the others.Its natural habitat is inside this environment.Here, an organism can find everything it needs to exist, including food, water, refuge from the elements, and a location to reproduce its young.To be able to survive, all species must be able to adapt to their environment.This entails adapting in order to survive the ecosystem's climatic conditions, predators, and other species that compete with them for resources like food and habitat.An adaptation is a modification or behavior change that an organism makes to aid in its survival.To learn more about habitats and how various plants and animals function, click on the links provided here.A creature may change how it interacts with its environment.Similar to how bird limbs have evolved into wings or how the cheetah is built for swift running, it might be a physical or structural adaptation.To learn more about environment adoption refer
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How does carbon enter the food chain?
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Answer:
Carbon is in almost everything. Carbon can come into the food chain from what animals eat and drink. Carbon can also come into plants from the soil absorbing dead animals.
hello please help i’ll give brainliest
Answers
Answer:
abiotic
Explanation:
abiotic - nonliving components of an ecosystem that can affect the living organisms.
Temperature is a nonliving component and it affects the organisms that live within a certain environment.
Therefore the answer is Abiotic
Reasons its not the other answers:
Biotic factors must be living things
Temperature is not a living thing therefore Biotic cannot be the answer
Same with living, temperature is not living therefore the answer cannot be living.
Temperature plays a huge role in an ecosystem therefore it is considered an important component and the answer cannot be unimportant.
Which of the following codes would you expect to
see in the web address of a scientific journal that
was published by a nonprofit organization?
A. .edu
B..com
C. .org
D..jnl
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My family has an orange and white female cat, which is uncommon. Please describe her possible inheritance. (You may need to research this!)
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Answer:
That orange and white cat next door could be an American Bobtail, a Persian, a Munchkin or even a Maine Coon! Their orange color comes from a predominance of a pigment called pheomelanin. This is the same pigment that makes some humans “redheads”.
HELP!!!! ASAP!!!
What is an important function of mitochondria?
A. converting energy from sunlight into chemical energy in ATP
B. converting chemical energy from ATP into chemical energy in glucose products
C. converting energy from sunlight into chemical energy in glucose products
D. converting chemical energy from glucose into chemical energy in ATP
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Identify the transformations of energy that take place in the diagram. Assume the girl in the diagram eats the corn to gain the energy to ride the bike.
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Answer:
kinetic and solar energy
Explanation:
hope it helps
Answer: This is it!
Hope this helps
1 pts
Question 36
Which of the following is a phenotype?
red hair
heterozygous
ODNA
0 Аа
Answers
Answer: Red hair
Explanation: Phenotypes are the physical characteristics or traits of an organism.
Explain the basic process of transcription. Include a description of the major intracellular structures involved.
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Answer:
Transcription is the cellular process of RNA synthesis by decoding the information contained in a DNA fragment
Explanation:
Transcription is the process by which the genetic information contained in a fragment of DNA called 'gene' is used as a template to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently used to synthesize a protein by the process of translation. In eukaryotic organisms, transcription involves a DNA template strand, which contains both non-coding (i.e., promoter, introns) and conding (i.e, exons) regions, and an RNA polymerase that adds nucleotides to the growing RNA strand using as a template a DNA strand. Both in prokaryotes and eukaryotes, transcription occurs in three basic steps: 1-initiation, where DNA strands separate, 2- elongation, where the RNA polymerase moves on the DNA sequence to synthesize an RNA molecule, and 3-termination, where transcription terminates depending on the sequence in the RNA (eukaryotic transcription has an additional step known as RNA processing).
What part of the excretory system transport urine from the kidneys to the bladder?
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Answer:
Ureter
Explanation:
what are chromosomes? how are they different between eukaryotes and prokaryotes?
Answers
Answer: A chromosome is a long DNA molecule with part or all of the genetic material of an organism. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.
Explanation:
three Importantees of sustainable development
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Answer:
sustainable development is important as it saves national budget,fulfill the needs of people , help in the coordination between the natural resources and people and conserve natural resources for future generations.
How are organisms grouped together in a hierarchy?
Answers
Answer:
They are grouped together by species-genus-family-order-class-phylum-kingdom-domain.
Explanation:
Describe two negative ways that the animals living in the area have been affected by the
changes shown in the diagram.
Answers
Answer:
less space, and less food because of the houses
1. Even after you eat a sweet dessert, the level of glucose in your blood stays relatively constant. This is an example of , the maintenance of relatively constant internal conditions despite fluctuations in the external environment. 2. The maintenance of internal water and solute concentrations within a narrow range is called . 3. The maintenance of internal temperature within a narrow range is called . 4. A(n) , such as a pigeon, is an organism that gains body heat primarily from its own metabolism. 5. A(n) , such as a salamander, is an organism that gains body heat primarily by absorbing it from the environment. 6. The disposal of nitrogen-containing wastes, as through urination, is called .
Answers
Answer:
1. Homeostasis.
2. Osmoregulation.
3. Thermoregulation.
4. Endotherm.
5. Ectotherm.
6. Excretion.
Explanation:
1. The level of glucose in a person's blood stays relatively constant even after he or she eats a sweet dessert. This is an example of homeostasis, which is the maintenance of relatively constant internal conditions despite fluctuations in the external environment. Homeostasis can be defined as a process through which a living organism maintains a steady or stable physical, internal and chemical environment that is ideal to enhance life and proper functionality.
2. The maintenance of internal water and solute concentrations within a narrow range is called: osmoregulation. Normovolemic describes the situation in which a living organism maintains a normal volume or amount of blood in the body.
3. The maintenance of internal temperature within a narrow range is called: thermoregulation. Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).
4. An endotherm, such as a pigeon, is an organism that gains body heat primarily from its own metabolism. It is also referred to as homotherm and it involves maintaining a constant body temperature.
5. An ectotherm, such as a salamander, is an organism that gains body heat primarily by absorbing it from the environment. Thus, an ectotherm have limited abilities with respect to regulating its body temperature.
6. The disposal of nitrogen-containing wastes, as through urination, is called: excretion. Glomerular capsule is also referred to as Bowman's capsule and it can be defined as a cuplike sac (structure) with a double wall, which makes up the tubular part of a nephron within the kidney of mammals. It is saddled with the responsibility of first filtering blood (ultrafiltration) under pressure to generate urine in the mammalian kidney.
A bar graph titled Global Trade (Percent of G D P). The x-axis is labeled Year from 1988 to 2013. The y-axis is labeled Percent of G D P from 0 to 70. 1988 and 1993 were under 40 percent. 1998 and 2003 were over 40 percent. 2008 and 2013 were almost 60 percent. Which statement is supported by information in the graph? Trade between nations steadily decreased between 1988 and 2013. Trade between nations steadily increased between 1988 and 2013. Trade between nations increased between 1988 and 2003, and then decreased. Trade between nations decreased between 1988 and 2003, and then increased.
Answers
Answer:
B
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The statement which is supported by the information in the bar graph is that: B. trade between nations steadily increased between 1988 and 2013.
What is a bar graph?A bar graph can be defined as a type of chart that is used to graphically represent data (information), especially by using rectangular bars or vertical columns.
Based on this bar graph titled Global Trade (Percent of GDP), we can infer and logically conclude that trade between nations increased steadily between 1988 and 2013, which was from over 40 percent (40%) to almost 60 percent (60%).
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1. Each branching point represents a point in evolutionary history where an ancestral evolutionary lineage gave rise to a new lineage. The most recent common ancestor shared by all lineages in this cladogram is
represented by the number
Enter... The most
recent common ancestor shared only by gymnosperms and angiosperms is represented by Enter..
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Hello. You did not present the cladogram to which the question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.
A cladogram is the representation of the evolutionary relationships between living beings, showing ancestry and the genetic relationship between them. The cladogram is represented by lines and dots. The lines represent the evolutionary time and the dot between them represents the ancestor of a new species. In this case, to answer your first question, we can consider that the most recent ancestor of all species is the ancestor of the central line. However, the most recent ancestor, shared only by gymnosperms and angiosperms, is the one that is in the dot closest to the lines that represent gymnosperms and angiosperms.
Answer:
a. 1
b. 4
Explanation:
why are owls considered keystone predator
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Explanation:
Keystone species are animals that help manage other animal species by controlling population numbers and biodiversity within an ecosystem. The impacts of keystone species are usually greater than their numbers.
owls can be a great benefit to places where rodent populations are high. Dense urban areas often suffer from an abundance of rats and mice spreading disease, and rural agricultural communities have their crops consumed and soil eroded from burrowing voles and field mice. Without owls, and other top predators, rodent populations could explode and exacerbate the effects they produce.
Answer:
the owl is a keystone species, as many other birds. and it gives them the nutrients they need when they eat the bird and it mangeges the population of the other species:)