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Phantasy [73]
4 years ago
8

Help pleasseeeeeee

Biology
2 answers:
Amanda [17]4 years ago
5 0

The correct answer is option A

The water in the ocean would have evaporated. Condensation was the reason for the formation of clouds and rain at that time. The temperature at that time was in the favor for the formation of ocean. Then, the ocean was formed and if the temperature could have increased soon after the oceans were formed. The water could have evaporated from the oceans.

Bad White [126]4 years ago
3 0
<span>The water in the ocean would have percolated down into the soil.

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The Golgi apparatus packages and sorts substances for delivery to different parts of the cell or outside the cell. Which cell or
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Anemia is a medical condition in which the affected person lacks enough red blood cells. What two effects will such a condition
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Two linked genes, A and B, are separated by 18 cM. A man with genotype AB/ab marries a woman who is ab/ab. The man’s father was
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Answer:

a) 9%.  

b) 16.8%.

Explanation:

a).

We are provided with the information that Two linked genes, A and B, are separated by 18 cM (centiMorgan). i.e the recombinant frequency is 18%

Also , the man's genotype is AB/ab... This only result to one explanation, that The man will definitely produce 18% of recombinant gametes which entails

9% Ab & 9% aB

i.e 0.09 Ab & 0.09 aB

On the other-hand, The mother ab/ab have tendency to produce just one single type of gamete which is ab

∴

The probability that their first child will be Ab/ab will be

Pr ( Ab/ab) = (0.09) x (1)

= 0.09

= 9%.  

b).

If the father produces 18% of recombinant gametes which entails

9% Ab & 9% aB , this typically implies that the number of the non-recombinant gametes will be;

100%-18% = 82%  ( non-recombinant gametes)

i.e genotype AB/ab = 82%

AB =41%; ab = 41%

AB = 0.41 ; ab = 0.41

Now, the probability that their first two children will both be ab/ab:

Using Multiplication Rule to calculate the probability that their first two children (ab/ab); we have:

 (0.41)(1) ×(0.41)(1)

= 0.1681

= 16.8%.

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