3 years ago

Select the correct answer.

Biology

1 answer:

Marina CMI [18]3 years ago

5 0

Answer:

shifting cultivation

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A prospective groom, who is healthy, has a sister with cystic fibrosis (CF), an autosomal recessive disease. Their parents are n

son4ous [18]

Answer:

Explanation:

From the given information:

Since the parent are normal; Let assume that their trait is Pp

The affected sister will be recessive in nature, so the trait will be pp

Now, the husband who is the groom will be a carrier with a probability of 2/3 since her sister is affected.

Also, the wife will be carrying a heterozygous trait since she is normal as well.

However, using Hardy-Weinberg assumption:

$q^2 = \dfrac{1}{2500}= 0.0004$

$q = \sqrt{0.0004}$

q = 0.02

Recall that:

$p+q =1 \\ p = 1 - q \\p = 1 - 0.02 \\p = 0.98\\$

Thus, $p^2 = (0.98)^2$

$p^2 = 0.9604$

$2pq = 2 \times 0.98 \times 0.022$

2pq = 0.0392

Finally, the required probability that there will be an affected offspring amongst the family is:

$= \dfrac{1}{4} \times \dfrac{2}{3} \times 0.0392$

$= \dfrac{1}{153}$

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How is framing contributing to the decline in biodiversity

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All forms of farming have major impacts on biodiversity, especially when new land is brought into cultivation. Habitats are destroyed and new ecological niches created which allow typical farmland species of birds, insects, mammals and weeds to establish themselves.

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According to advocates for the use of genetic engineering, which is an example of the importance of recombinant DNA technology?

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D. There is a reduced use of pesticides, herbicides, and fertilizers

Explanation:

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