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Phoenix [80]
3 years ago
9

Which of the following is likely to be researched by a toxicologist?

Biology
2 answers:
astraxan [27]3 years ago
7 0

The answer should be D

vesna_86 [32]3 years ago
4 0
As for this problem, the most probable answer and the most likely answer for this one would be D. the effect of pesticides on organisms in the environment.

A toxicologist would only study about chemicals and their effect on organisms in the environment. Pesticides are chemicals made to combat organisms that aren't wanted particular parts of the environment such as crops and rice field. These pesticides don't just affect those organisms that are targeted, but even the users and other organisms that may have come in contact with pesticides.
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Which characteristic of life best describes the process of photosynthesis?
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Explain the central dogma of molecular biology. please don't define it or state what it says.
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Explanation:

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Which of the following is an example of an unstable ecosystem .
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20 POINTS - AP Biology<br><br> In a certain population of rats....
m_a_m_a [10]

The predicated frequency of homozygous dominant rats at are: 0.11 (Option A). See the explanation below.

<h3>What is a homozygous dominant rat?</h3>

A homozygous organism has two copies of the same allele for a gene.

If an organism has two copies of the same dominant allele, it is homozygous dominant; if it has two copies of the same recessive gene, it is homozygous recessive.

<h3>What is the justification of the above answer?</h3>

Note that the total population of rats is: 200

Number of rats with brown fur = 112

The frequency of brown fur rats thus,

112/200

= 0.56

Note that it is also stated that the brown fur rats are dominant in relation to the gray fur rats. Thus, in accordance to Hardy Weinberg's equation, the frequency of the dominant rats is depicted as: p²

Thus:

p²  + 2pq = 0.56

Hence, the frequency of the the Homozygous recessive gray rats is given as:

p² + q² + 2pq = 1

q²  = 1 - 0.56

q² = 0.44

q = 0.663

P = 1-q

= 1 - 0.663

= 0.337

Thus the frequency of the homozygous dominant rats is:
p²

= 0.337²

= 0.1135

≈ 0.11

Therefore the correct answer is A.

Learn more about homozygous organism at;
brainly.com/question/10253387
#SPJ1

4 0
1 year ago
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