Question 491 pts In the human ABO blood grouping, alleles A and B are codominant

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Question 491 pts

In the human ABO blood grouping, alleles A and B are codominant. What must the genotype of a person with blood type O be?

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Question 501 pts

The degree of earlobe attachment in humans is inherited as a simple dominant allele for free earlobes (F), or as a recessive allele of attached earlobes (f). What is the probability that a woman with attached earlobes will have children with attached earlobes if her husband (their father) has free earlobes, but the grandfather (husband's father) had attached earlobes? (hint: think punnet square)

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Question 511 pts

A woman with colorblindness marries a man that is not colorblind. Colorblindness is a sex-linked trait (X-linked) What is the probability that they will have children that are colorblind?

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Question 521 pts

The significance of the Griffith-Avery and Hershey-Chase experiments were that they all showed:

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Question 531 pts

The mRNA leaves the cell's nucleus following transcription. What does it become associated with next?

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Question 541 pts

The molecule that carries each amino acid to its correct position along mRNA during translation in the cytoplasm is:

Explanation / Answer

511.Ans-100%
The color blindness is the X-linked trait. Therefore,
The genotype of woman =XcXc
The genotype of a normal man= XY
P1                    XcXc    ×       XY
Gametes            Xc             X       Y
                        Xc X             Xc Y
Therefore, 100 % of the son is colorblind and 100% of carrier daughter
521.Ans-DNA was the molecule of heredity
The Hershey–Chase experiments proved that DNA is the genetic material.
531.Ans-A ribosome
The mRNA leaves the nucleus, and goes to the cytoplasm and then binds to a ribosome.
541.Ans-tRNA
During translation in the cytoplasm, tRNA molecules transfer amino acids to the ribosomes.

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