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3 years ago

Correct or not? Confirmation

Biology

1 answer:

zmey [24]3 years ago

4 0

Answer: Amphibians: X, X, ✅, ✅

Birds: X, ✅, X, ✅

Fish: X, X, ✅, ✅

Mammals: ✅, ✅, X, ✅

Reptiles: ✅, X, ✅, ✅

Explanation: I researched I hope this is correct. Btw this what should be on your paper. This is not grading what is correct or what is right.

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3 years ago

A man with free earlobes and the ability to taste PTC marries a woman with free earlobes and no ability to taste PTC. They have

Mrac [35]

Answer:

Father's genotype is T T, E e

Mother's genotype is t t, E e

Explanation:

Tasting PTC

Let the characters for tasting and not tasting PTC be T and t respectively.

Since all the children can taste PTC, it can be deduced that tasting PTC is a dominant trait.

The man will be homo-zygous dominant for tasting PTC while the woman is homo-zygous recessive for tasting PTC.

Genotype of man is T T and genotype of woman is t t

T T x t t = T t, , T t, T t; which is a 4:0 phenotype.

Earlobes:

Let the characters for Free and attached earlobes be E and e

Since both the man and woman have free earlobes and 3 out of 4 children have free earlobes, it can be deduced that free earlobes is dominant while attached earlobes is recessive.

The ratio of free to attached earlobes is 3:1

The man and the woman are both hetero-zygous dominant, E e for free earlobes, so that a cross between them will yield three hetero-zygous dominant for free earlobes and one homo-zygous recessive for attached earlobes.

E e x E e = E E, E e, E e, e e; which is a 3 : 1 phenotype.

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3 years ago

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lys-0071 [83]

Answer:

Explanation:

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Correct or not? Confirmation ​

Correct or not? Confirmation