The frequency of alleles in the population started low and continued to increase over time.
What is frequency of alleles?The frequency of alleles refers to the ratio of the number of times an allele occurs to the copies of all the alleles at that particular genetic locus in the given population.
We can see that the sticklebacks had a greater number of those introduced from marine to fresh water hence of the 200 sticklebacks, the frequency of alleles in the population started low and continued to increase over time.
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4. What could happen to our local environment if a company pumped materials into the
atmosphere which created a drastic pH change in the rain water?
Answer:
It would upset the balance of the environment and cause animals to die off from the toxic and then other animals would die since they were eating the animals that had died.
If a company pumped materials into the atmosphere which created a drastic pH change in the rainwater, it could have a number of negative impacts on the local environment like acid rain, eutrophication, risk of respiratory illness, and decreased visibility.
Acid rain: Rainwater with a pH of less than 5.6 is considered acid rain. Acid rain can damage trees, plants, and crops. It can also corrode buildings and infrastructure.
Eutrophication is the process of excessive nutrient enrichment in a body of water, leading to the growth of algae and other aquatic plants. This can deplete the oxygen levels in the water, killing fish and other aquatic life.
Increased risk of respiratory illness: Acid rain can irritate the lungs and airways, leading to respiratory problems such as asthma and bronchitis.
Decreased visibility: Acid rain can also reduce visibility, making it difficult to drive, fly, and see clearly.
The specific impacts of a drastic pH change in the rainwater would depend on the materials that were pumped into the atmosphere and the amount of material that was pumped. However, the impacts would likely be negative and could have a significant impact on the local environment.
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URGENT! 15 Points!
Answer questions 13-17 plz <3
_____ is a binocular cue used to judge distance and depth based on the tension of the muscles that direct where the eyes are focusing.
Answer:
An important binocular depth cue is convergence, the inward turning of our eyes that is required to focus on objects that are less than about 50 feet away from us. The visual cortex uses the size of the convergence angle between the eyes to judge the object's distance.
Explanation:
The vagus nerve operates under the control of the parasympathetic nervous system and causes the ________. *
Answer:
heart rate to decrease
Explanation:
Please mark me as brainliest
__________ are supporting cells with paddle-shaped protrusions that help produce the myelin sheath insulating neurons in the central nervous system.
We can confirm that the supporting cells with paddle-shaped protrusions that help produce the myelin sheath-insulating neurons in the central nervous system are Oligodendrocytes.
Why are these cells important?As mentioned, these cells produce the myelin cover to protect the axons of neurons in the central nervous system. This cover is essential to promote the impulses needed to carry out the most basic functions on a day-to-day basis. The absence of this coverage can lead to many illnesses.
Therefore, we can confirm that the cells being described in the question are nonother than the Oligodendrocytes of the central nervous system.
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3. What is the relationship between individual l-1 and individual III-2 in the above pedigree?
Describe the symbiotic relationship between bacteria and leguminous plants
Answer:
Legumes are able to form a symbiotic relationship with nitrogen-fixing soil bacteria called rhizobia. The result of this symbiosis is to form nodules on the plant root, within which the bacteria can convert atmospheric nitrogen into ammonia that can be used by the plant.
Explanation:
What are some of the biological features that humans have developed that the early mammals did not possess? How have these features allowed us to become the dominant mammalian species on earth?
Mammals are the organisms having specialized mammary glands, hair on the body, giving birth to young ones, etc. Humans are unique among mammals due to their health and immune system and most importantly opposable thumb, upright posture, etc.
What are characteristics of mammals?Mammals are organisms having mammary glands, fur or hair on the body surface, etc.
The characteristics that make the humans different from other mammals are:
Big brain and opposite thumb.Upright posture.Fire.Clothing, etc.Thus, these features such as opposite thumb, brain, upright posture, developed immune system, etc, are the main reason behind the difference and dominance of humans over mammals.
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What are the DNA pyrimidine bases?
A. adenine and thymine
B. cytosine and thymine
C. adenine and cytosine
D. adenine and guanine
Answer:
the b cytosine and thymine is the correct answer
Generally, epidemiological studies _______.
a. establish causation.
b. prove correlations.
c. cannot determine cause-and-effect relationships.
d. are science-based research efforts that examine two variables.
Answer:
the answer is c
Explanation:
Generally, epidemiological studies cannot determine cause-and-effect relationships.
What is the simple definition of epidemiology?Epidemiology is the method used to find the health consequences of a population and the causes of illness. In epidemiology, patients are communities, and individuals are seen collectively.
Epidemiological studies provide the basis for disease control and prevention by tracking disease prevalence, characterizing natural history, and identifying disease determinants or causes. .. Define risk factors for illness and preventive medicine goals.
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Question: How does the number of wire coils on an electromagnet affect the strength of magnetic force?
do Hypothesis and the Reasoning for Hypothesis
PLS HELP
Answer:
here's your answer hope it helps you
Explanation:
the strength of magnet increase with increasing number of turns in the coil.
the strength of the electromagnet is directly proportional to the number of turns in the coil. if you double the number of turns, you double the strength of the electromagnet.
The number of wire coils on an electromagnet affects the strength, as the strength is directly proportional to the number of turns in the coil.
What is an electromagnet?An electromagnet is a type of magnet where an electric current creates a magnetic field. The wire that makes up an electromagnet is typically twisted into a coil. A magnetic field is produced by a current flowing through the wire and is concentrated in the hole at the center of the coil.
As the coil's turns grow, the magnet's strength does as well. The coil's number of turns directly relates to the electromagnet's strength. The electromagnet's strength doubles when the number of rotations is doubled.
Therefore, since the strength is inversely related to the number of turns in the coil, the number of wire coils on an electromagnet affects its strength.
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True/ False: If the average heterozygosity for Drosophila is 25%, it means that 25% of the nucleotides vary between the 2 individuals at any given time.
Answer:
False
Explanation:
Meredith is 5-years-old. She has a genetic condition known as xeroderma pigmentosum, which makes her extremely sensitive to UV light. If she goes outdoors, she must have all her skin covered and wear a hat and sunglasses. Based on her condition she is most likely to ________. Select all that apply.
From what we know, if Meredith goes outside unprotected, she is most likely to develop skin cancer.
How does this happen?Meredith does not have natural protection against the UV light from the sun. This light causes mutations at a genetic level. These mutations cause the cell to grow rapidly and without end, turning it into a cancerous cell.
Therefore, we can confirm that among many other illnesses and side effects, Meredith is most likely to develop skin cancer due to the UV light.
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Which of these correctly shows ecological succession in a lava field?
A.Soil is created. Moss and lichen arrive by birds to barren lava field. Monkeypod trees grow. Fountain grass grows.
B.Moss and lichen arrive by birds to barren lava field. Fountain grass grows. Monkeypod trees grow. Soil is created.
C.Soil is created. Moss and lichen arrive by birds to barren lava field. Fountain grass grows. Monkeypod trees grow.
D.Moss and lichen arrive by birds to barren lava field. Soil is created. Fountain grass grows. Monkeypod trees grow.
The ecological succession that occurs in a lava field is as follows:
Moss and lichen arrive by birds to barren lava field.Soil is created.Fountain grass grows.Monkeypod trees grow.What is ecological succession?Ecological succession refers to the series of changes that occur in a habitat gradually with new species replacing existing species or a barren habitat until the environment becomes more complex.
A lava field is a barren field where there are no species
The ecological succession that occurs in a lava field is as follows:
Moss and lichen arrive by birds to barren lava field; Soil is created; Fountain grass grows; Monkeypod trees grow.
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Which sensory system does not route to the thalamus before going to the primary cortex?.
Answer:
for smell
Explanation:
The only sensory information that is not relayed by the thalamus into the cerebral cortex is information related to smell (olfaction).
During protein digestion, _____ are broken down into _____, which are then absorbed into the bloodstream and transported for use elsewhere in the body.
Answer:
Proteins then Amino Acids
In what ways can students use time management? Check all that apply
to determine when to study
to choose what dasses to take
to decide how to use study time
to decide if breaks are needed
to create a study schedule
How does the malachite green stain enter an endospore?.
Answer:
Because of their tough protein coats made of keratin, spores are highly resistant to normal staining procedures. The primary stain in the endospore stain procedure, malachite green, is driven into the cells with heat
PLEASE HELP with this. i’m not sure what it is and my notes don’t help me. please help me out!
Answer:
it's true. that looks to be musle tissue to me
Volcanic eruptions change the short term weather my blocking sunlight and making temperatures ________. Volcanic eruptions change the long term climate by adding greenhouse gases and making the climate _____.
Answer:
cooler/warmer
Explanation:
hope this helps!
Answer:
cooler and warmer
Explanation:
Suspended sediments in the water absorb heat?
True
False
Answer:
TRUE
Explanation:
Suspended silt diminishes the entrance of light into the water. This influences angle bolstering and tutoring hones and can lead to decreased survival.
Define ecological predation
Answer:
Brainliest pls
Explanation:
In predation, one living being kills and consumes another. Predation gives the energy to draw out the life and advance the multiplication of the organic entity that does the killing, the hunter, to the hindrance of the creature being consumed, the prey. Predation impacts living beings at two biological levels.
What is the part of the flower with the pollen in it?
the part of the flower with pollen in it is the stamen
Answer:
The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.
Explanation:
Identify the microscope used in most high school biology classes.
Epiphytes only grow in the under story. true or false
Answer:
false
Explanation:
What type of cells are responsible for photosynthesis?
Answer:
The chloroplast is the organelle in plant cells that is responsible for photosynthesis
Explanation:
thats it
Why does Earth’s surface change? How does Earth’s surface change?
Your paragraph should be a minimum of 5 complete sentences. Your answer to each question should include both an explanation and a few examples.
Question: "Why does Earth’s surface change? How does Earth’s surface change?"
Answer: "Earth is a system of frequent interaction between the surface conditions, interior, and external events. Many of Mother Nature's lets say 'Natural Disasters' is one of the many things that help to mold and shape our planet. Take, for example, volcanos into consideration: when the eruption begins within a volcano, it pushes up new material from underground, helping to create new land forms (this was how many of Hawaiian's islands were created.)
Shifting of tectonic plates within the Earth's crust and upper mantle is another reason. The plates are constantly interacting, and lets say, 'grinding' together, as well as some colliding and breaking apart. Any of these reactions to the shifting of the tectonic plates can build any of our landforms and landscapes (including mountain ranges, oceans, valleys, etc.)
Also, another case of nature, erosion of the surface from water, wind, sand, chemicals, and living land creatures can develop and mold the surface of Earth as well. Countless numbers of forces are frequently breaking down and departing the surface, moving and spreading the materials of the surface to other sides of the Earth, later on perhaps building new formations."
^I understand this is a lot to read and probably more than you were hoping for, but I hope this can at least point you into the right direction. Happy Early Valentines Day!
Red-green color blindness is caused by an X-linked recessive allele. Suppose a color-blind man and a woman with normal vision and no family history of color blindness married and had a daughter who was color blind and had Turner syndrome. Explain how this could happen citing which parent(s) could be responsible and where NDJ could occur.
A person trying to develop higher self-esteem should attempt to choose friends who __________. A. Have a high social status B. Try to change your bad habits C. Accept who you are D. Are extremely wealthy Please select the best answer from the choices provided. A B C D.
Answer:
the answer is c accept who you are thats how you get a higher self esteem
Answer:
C. - accept who you are
Explanation:
100 hundo percentage
In order to change an observable characteristic of an organism, one would only need to change the DNA ________.
Answer: Sequence
Explanation: DNA exists like a code and if you had a chain like ATGC and rearranged it to be AGCT, they could represent two very different forms of a trait like hair color, one is blond and one is brown, but they are both made of the same puzzle pieces.
In order to change an observable characteristic of an organism, one would only need to change the DNA sequence that codes for that characteristic.
How traits of an organism are determined ?Observable characteristics or traits of an organism are determined by the genes present in the organism's DNA. Changes to an organism's observable characteristics can occur when there are changes in the DNA sequence.
The DNA sequence provides instructions for the synthesis of proteins, which are responsible for the structure and function of cells and tissues in an organism.
A change in the DNA sequence, such as a mutation, can lead to changes in the amino acid sequence of a protein, which can alter its structure and function. If the protein is involved in a biochemical pathway that controls a particular trait, then the change in its structure and function can result in a change in the observable characteristic of the organism.
For example, the gene responsible for the production of melanin determines the color of an organism's skin, hair, and eyes. Any changes in the DNA sequence of this gene can affect the production of melanin, resulting in changes in the observable characteristics of the organism's skin, hair, and eyes.
Therefore, to change an observable characteristic of an organism, one would need to change the DNA sequence that codes for that particular characteristic.
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