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sergij07 [2.7K]
3 years ago
9

An example of a human- caused disturbance is

Biology
1 answer:
alekssr [168]3 years ago
8 0
He is right it is pollution as pollution is caused by car factorys ect


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A locus that affects susceptibility to a degenerative brain disease has two alleles, V and v. In a population, 16 people have ge
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Answer:

Yes, the population is evolving

Explanation:

Hardy-Weinberg equilibrium states that a population is not evolving if it is in hardy weinberg equilibrium as the alleles frequency do not change over time in generations.

In mathematical equation, the genotype frequency will be -P²+2Pq+q²=1 and allele frequency will be p+q=1, where p = dominant allele and q will be recessive allele.

In the question, since the observed genotype are-

P² - VV= 16

2Pq- Vv- 92

q²- vv- 12

<u>1. Calculate allele frequency</u>

Now we will calculate if the expected value is same or close or not.

We will calculate allele frequency

Population has 120 individuals which means it has - 240 alleles.

In which V (p) will be- 32 +92= 124 allele

p- dominant allele/ total allele=  124/ 240 = 0.52

P= 0.52

q will be 1-0.52= 0.48

<u>2. Expected genotype frequency</u>

Now we will calculate expected genotypic frequency.

P²- 0.52 X 0.52= 0.27

2Pq = 2 x 0.52x 0.48 =  0.5

q²= 0.48 x 0.48 =  0.23

<u>3. Expected progeny </u>

P²= 0.27 x 120= 32 VV

2Pq= 0.5 X 120= 60 Vv

q²= 0.23 x 120= 28 vv

Since the observed value is not equal to the expected value therefore the population is not in Hardy- Weinberg equilibrium and the population is evolving.

Thus, Yes, the population is evolving is correct.

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A cell biologist carefully measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the
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Answer:

100 units

Explanation:

The mother cell contains 200 units of DNA. During cell division, this amount is split between the daughter cells produced and each daughter cell will receive half of the amount of DNA present in the parent cell.

Since mitotic cell division process gives rise to 2 daughter cells, each daughter cell will receive 100 units of DNA.

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