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Colt1911 [192]
3 years ago
7

How many years will it take Mount Rushmore to finish weathering

Biology
1 answer:
sukhopar [10]3 years ago
7 0
More than 500,000 years
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A couple has three children, two without sickle cell anemia and one with sickle cell anemia. The mother has sickle cell anemia a
bezimeni [28]

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Explanation:

The sickle cell allele is recessive. Hence, in order for any child of the couple to have sickle cell anemia, such a child will have to inherit an affected allele each from the two parents. This means that both the father and the mother must have affected alleles in their genotypes. In other words, two sickle cell alleles are required for the abnormality to manifest.

Let us assume that the sickle cell allele is represented by S and the normal allele is represented by A.

Now, it is established that the mother has sickle cell anemia, her genotype would be SS. The father does not have sickle cell, his genotype can either be AA or AS.

Assuming the genotype of the father is AA:

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Assuming that the genotype of the father is AS

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<u>Therefore, in order to produce children with sickle cell, the father has to be AS, otherwise, he has to be AA.</u>

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3 years ago
What does it mean when scientists say that living organisms share a universal genetic code?
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When a scientist say's organisms have the same universal genetic code it mainly means that the "organisms use the same four nucleotide bases." Now <span>organic molecules that serve as the monomer units for forming the nucleic acid polymers. 

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Which of the following facts supports the argument that a pregnant cow should be fed more in its last trimester?
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Three-Quarters of all growth occurs during the third trimester.

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