10. What was the result when Morgan mated a white-eyed male fruit fly with a red-eyed female fruit fly?
Only male offspring had red eyes
Half the offspring had white eyes.
All the offspring had red eyes.
All the offspring had white eyes,
Answer:
When Thomas Hunt Morgan mated a white-eyed male fly with a red-eyed female, he came to the startling conclusion that the trait for eye color was located on the chromosome that determines sex. ... F2 generation: The offspring showed a ratio of three red-eyed flies to one white- eyed fly.
Explanation:
Answer:
all the offspring had red eyes.
Explanation:
gradpoint
List and explain the 3 paths natural selection can take.
Answer:
1. Stabilizing Selection
2. Directional Selection
3. Disruptive Selection
Explanation:
Stabilizing Selection
This type of natural selection occurs when there are selective pressures working against two extremes of a trait and therefore the intermediate or “middle” trait is selected for. If we look at a distribution of traits in the population, it is noticeable that a standard distribution is followed:
Example: For a plant, the plants that are very tall are exposed to more wind and are at risk of being blown over. The plants that are very short fail to get enough sunlight to prosper. Therefore, the plants that are a middle height between the two get both enough sunlight and protection from the wind.
Directional Selection
This type of natural selection occurs when selective pressures are working in favour of one extreme of a trait. Therefore when looking at a distribution of traits in a population, a graph tends to lean more to one side:
Example: Giraffes with the longest necks are able to reach more leaves to each. Selective pressures will work in the advantage of the longer neck giraffes and therefore the distribution of the trait within the population will shift towards the longer neck trait.
Disruptive Selection
This type of natural selection occurs when selective pressures are working in favour of the two extremes and against the intermediate trait. This type of selection is not as common. When looking at a trait distribution, there are two higher peaks on both ends with a minimum in the middle as such:
Example: An area that has black, white and grey bunnies contains both black and white rocks. Both the traits for white and black will be favored by natural selection since they both prove useful for camouflage. The intermediate trait of grey does not prove as useful and therefore selective pressures act against the trait.
Which pair of structures would provide a positive identification of an animal cell under a microscope?
Answer:
lysosome, flagellum
Explanation:
Took the test & it was correct. See picture below.
Help -
this is important sksk I’m taking a test and I need a good grade
Will mark brainliest
Answer:northeast
Explanation:
Are there organisms that can be abiotic and biotic? Explain
NS
What are magnetic field lines?
A. Lines that show the shape of a
magnetic field
B. Lines that show the path of electrons
C. Lines that show aligned atoms
Answer:
A
Explanation:
Magnetic field lines are a visual tool used to represent magnetic fields. They describe the direction of the magnetic force on a north monopole at any given position. The density of the lines indicates the magnitude of the field.
Structure X most likely functions in the
When making a Punnett square the alleles of the mother and father are written at the top and side of the four square box. True or False
It is True that when making a Punnett square the alleles of the mother and father are written at the top and side of the four square box.
Answer:
True
Explanation:
There is one letter per box on the top two, and left two.
What type of cells develop into a variety of cells, all with different structures related to their
different functions?
Answer:
stem cells
Explanation:
stem cells are able to become any somatic sell; blood, lung, heart, etc.
Explain why the passenger pigeon,which was once the most abundant bird in north America,disappeared completely.
Answer with Explanation:
The "passenger pigeon" used to be North America's most popular bird. Their population even reached 3 billion (or even more). They always traveled together. Their decline in number was noted in the 19th century. People became interested in hunting them for food because they were relatively cheap and tasty . They were also a great source of protein. It was easy to hunt them down although they could fly very fast because their flocks were huge in number. Some people killed them because they didn't want the birds ruining their crops. Their nesting grounds were also disturbed, which ultimately drove them away from the forests. People were overkilling them, and this sped up with the advancement of technology. The number of pigeons killed outnumbered the newborn pigeons, and after decades of hunting them down, their number dwindled with the last one passing away in 1914.
Many common products, such as wooden furniture, paper, and books, are
made from trees. Which of the following is a likely consequence of humans
cutting down a forest in order to make use of the natural resources there?
A:destruction of animal habitats
B:increased acid rain
C:increase of light pollution in cities
D:decrease of chemical runoff into oceans
Please help with my home work
Answer:
Many common products, such as wooden furniture, paper, and books, are made from trees. This act of human being causes the destruction of habitats. Explanation: The term trees, forest, plants etc are used to denote those living organism which follows living mechanism which states that live and let live
Explanation:
help asap!
DNA polymerase is an enzyme required in DNA replication. Its role is to synthesize DNA, adding individual nucleotides to each strand of newly synthesized DNA with the help of other enzymes such as primase and ligase. There are several families of DNA polymerase in both prokaryotes and eukaryotes, but through different species, portions of DNA polymerase are highly conserved. What do you think is the evolutionary significance of DNA polymerase? What do you think would happen if there was a genetic mutation on the genes encoding for DNA polymerase?
A sample answer would look like this: The DNA polymerase has evolutionary significance because it is required for DNA to be transmitted across generations. A genetic mutation in a gene encoding for DNA polymerase could lead to significant flaws in DNA replication, which could lead to major flaws in the DNA replicated for cell division. This could lead to large-scale errors and result in the death of the organism.
Answer:
Abstract. DNA polymerase I (pol I) processes RNA primers during lagging-strand synthesis and fills small gaps during DNA repair reactions. However, it is unclear how pol I and pol III work together during replication and repair or how extensive pol I processing of Okazaki fragments is in vivo
Explanation:
Answer:
DNA polymerase has evolutionary significance because it is required for DNA to be transmitted across generations. A genetic mutation in a gene encoding for DNA polymerase could lead to significant flaws in DNA replication, leading to major flaws in the DNA replicated for cell division. This could lead to large-scale errors and result in the organism's death.
Explanation:
1. What kind of plant life dominates the coniferous forest biome?
A. deciduous trees
B. grasses
C. small shrubs
D. cone-bearing trees
Answer:
Small Shrubs
Explanation:
They Give off energy that makes them dominate the coniferous forest biome
The dominant plant life in the coniferous forest biome are cone-bearing trees, also known as conifers.
What is a coniferous forest biome?Coniferous forests are found in areas with cool, moist climates, such as the taiga regions of North America, Europe, and Asia. These forests are characterized by their dense stands of evergreen trees that are adapted to the long, cold winters and short growing seasons of their native habitats. The most common types of conifers in these forests include species of pine, spruce, and fir.
Conifers are easily recognizable by their distinctive needle-like leaves and reproductive structures, which are cones that contain the seeds. These adaptations allow conifers to conserve water, resist cold temperatures, and reproduce efficiently, making them well suited to the harsh conditions of the coniferous forest biome.
In contrast, deciduous trees, grasses, and small shrubs are more commonly found in other biomes, such as deciduous forests and grasslands.
Learn more about coniferous forest biome, here:
https://brainly.com/question/1047385
#SPJ6
What are the differences between the Arctic and
Antarctic Regions *
Answer:
The primary difference between the Arctic and Antarctica is geographical. The Arctic is an ocean, covered by a thin layer of perennial sea ice and surrounded by land. ... Antarctica, on the other hand, is a continent, covered by a very thick ice cap and surrounded by a rim of sea ice and the Southern Ocean.
Explanation:
Which is required for both anaerobic respiration and aerobic respiration?
O oxygen
water
O mitochondria
O glucose
How might the fennec fox's population suddenly Increase? How might this affect the ecosystem?
Answer:
If rabbits population (prey of fennec foxes) suddenly increase as well. The other prey of the fennec foxes would shrink in population because there would be more fennec foxes to eat them. This would at some point even out and the ecosystem would go back to normal.
Which phrase defines altitude?
how tightly molecules are packed
a column of air pushing on an area
the force pushing on an area or a surface
the height of a given point above sea level
Why is genetic diversity higher in big cities than in small towns?
Answer:
cities are more likely to have a population of people from other places while small town don't really have a Flux of population so it stays smaller
There is a genetic diversity higher in the big cities than in small towns because of the diversity of population that is present in it. The diversity brings out the different type of population in them.
What are the various factors that determine the population as well ?These are the availability of resources with the type of temperature and the environment that are determined in order to see the type of population present in it.
Genetic diversity is just influenced by the population size along with the with smaller populations that are having an increased probability of the inbreeding with the genetic drift and potential fixation of the deleterious types of alleles which just decreases the genetic diversity along with the adaptive potential.
Higher population of the genetic diversity that is in abundant species that is likely happening due to the combination of the demographic factors that are including the larger types of the local population that are in sizes with the faster generation times along with the high rates of the gene flow with the other type of populations.
Learn more about genetic diversity at :
https://brainly.com/question/14696671
#SPJ2
hey guys I wanted to ask when is spring cleaning because my parents think it occurs in the middle of January
Answer:
april
Explanation:
Answer:
April 1st
Explanation:
1. Which of the following are carcinogens (risk factors that are known to cause cancer)? a. harmful chemicals
b. genetic factors
c. excessive exposure to UV rays
d. all of the above
e. none of the above
Answer:
d. all of the above
Explanation:
HELPPPP!!!!! ASAPPPP!!!!
Which group of organisms evolved first?
reptiles
amphibians
fish
mammals
Answer:
fish
Explanation:
A common running-related inflammatory injury of the extensor muscles and
surrounding tissues of the lower legs is called
O shin splints
O muscle sprain
O myopathy
tendinitis
Answer:
Shin Splints is the answer to your question
how to find the phenomenon of an essential question?
Answer: By reading and revising the literature based on phenomenon or by performing an experiment.
Explanation:
Essential questions are those key questions that can be asked from the students or the students can ask those questions after the lecture about a specific topic. The essential questions are asked by the teachers to determine the focus of the students on the lecture and how much information they have retained. This helps in improving the explanation ability of students. The essential questions are related to the phenomenon and it can be answered and find by recollecting what has been taught by the teacher, reading and revising the literature related to the phenomenon. These can also be answered by performing a scientific experiment.
A doctor is diagnosing a patient with gigantism. Which of the following sources would be the least helpful in making
that diagnosis?
O growth chart
medical book
patient's family history
O patient's diet
Answer:
The answer is D, patient's diet.
Explanation:
As per the observation, it is clear that the correct answer is a medical book as it will have the medical history of the patient.
Gigantism is an extreme situation this is almost usually due to an adenoma, a tumor of the pituitary gland. Gigantism happens in sufferers who had immoderate boom hormones in childhood. The pituitary tumor cells secrete an excessive amount of boom hormone (GH), which main to many adjustments withinside the body.
How is gigantism diagnosed?If gigantism is suspected, the prognosis is commonly shown via way of means of taking blood assessments to degree the stages of boom hormone and insulin-like boom component 1 (IGF1) circulating withinside the blood. IGF1 is launched into the blood often via way of means of the liver in reaction to boom hormone.
Thus it is clear that medical books will have a medical history of patetint wityh gigantism.
To learn more about gigantism refer to the link :
https://brainly.com/question/7035609
QUESTION 5
How does a plant cell split into two new cells?
Plants cells do not go through cytokinesis
A cleavage furrow forms
A cell plate forms
The cell pinches in
All____species are dangerous to ecosystems
Answer:
invasive
Explanation:
hope it's help
A type of plant that has cells inside that form long tubes and carry nutrients and water is called _____________.
Answer:
It is called a Vascular tissue.
Explanation:
Hope this helped ;)
Evolution of the atmosphere
Describe and explain how the earths atmosphere evolved.
Answer:
Answer is on the pic
Explanation:
I hope it's helpful!
Plz help!!!!
Kinda in a hurry to catch up on biology rn anything can help!!!
Answer:
16. Control group: Subject A
17. Independent (manipulated) variable: Type of powder
18. Dependent variable: Itching time
19. Explain whether the data supports the advertisement´s claims about its product. Yes, it does.
Explanation:
Control group: The control group is used to identify if there are any other factors influencing the results obtained by the treatment in the study (in this case, the new product), from the results that might be a consequence of other factors. The control group must be selected from the same population as the treatment group. Data from an experimental group are compared with the data from a control group. These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.The experimental group is the one that receives the experimental procedure, with changes in the independent variable. There can be several experimental groups. In this case, the experimental group is subject B.
Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, the type of powder is the independent variable. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. In the exposed example, inching time is the dependent variable, that depends on the type of powder used. The data does support the advertisement´s claims about its product. The effect of the new product lasts 50% more than the original product. The old powder produced itching for 30 minutes, while the new product produced itching for 45min (15 more minutes, 50% more).Explain how greenhouses modify the environment to improve growing
conditions for plants?