It was important that Mendel examined not just the F1 generation in his breeding

Question

It was important that Mendel examined not just the F1 generation in his breeding experiments, but the F2 generation as well, because

A) the dominant phenotypes were visible in the F2 generation, but not in the F1
B) parental traits that were not observed in the F1 reappeared in the F2
C) analysis of the F1 progeny would have allowed him to discover the law of segregation, but not the law of independent assortment
D) he obtained very few F1 progeny, making statistical analysis difficult
E) many of the F1 progeny died

I answered A and it was incorrect.

My Second question is:
When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red- and white-eyed flies. Remarkably, all the white-eyed flies were male. What was the explanation for this result?

A) Other female-specific factors influence eye color in flies.
B) The gene involved is on the Y chromosome.
C) The gene involved is on the X chromosome.
D) Other male-specific factors influence eye color in flies.
E) The gene involved is on an autosome.

I answered B and it was incorrect.

My third question is:
A child is born with blood type A-. The mother has blood type O+. The identity of the child’s biological father is in question and a blood test is the first test used to determine which of two possible men may be the father. Male #1 has blood type AB+, male #2 has blood type B-. Which father does the blood test support as the child’s biological father?

A) Both 1 & 2 could be the father based on this data
B) 1
C) Neither male could be the biological father
D) 2
E) It is impossible to distinguish between the two males

I answered C and it was incorrect.

Explanation / Answer

1. B 2. C 3. C, sometimes it may rarely happen that chidren may have Rh-ve even if both the parents are +ve. the answer may be B in that case

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