2. Which of the following describes the genotype and phenotype of parents whose child will definitely have a recessive trait?

A. Both parents have a homozygous for the recessive allele and have that trait**
B. Both parents have a homozygous for the recessive allele but do not have that trait
C. Both parents have a homozygous for the recessive allele and have that trait
D. Both parents have a homozygous for the recessive allele but do not that that trait

^I’m really confused cause they both have the same answer twice O_O...but I chose A

3. A long-haired cat (recessive trait s) is crossed with a heterozygous short-haired cat (dominant trait S). Which percentage of their offspring will have long hair?

A. 100 percent
B. 50 percent**
C. 25 percent
D. 0 percent

4. In humans, having dimples is a dominant trait. If one parent has dimples and is homozygous for the trait, what is the probability any of his or her offspring will NOT have dimples?

A. 100 percent
B. 50 percent
C. 25 percent**
D. 0 percent

5. In humans, having more than 5 fingers or toes is dominant over having exactly 5 fingers or toes. Which of the following situations is most likely result in exactly half of a couple’s offspring having 6 digits and half of them having 5?

A. Both parents are homozygous for this trait**
B. Both parents are homozygous
C. One parent is heterozygous while the other is homozygous for this recessive trait
D. One parent is homozygous for the recessive trait while the other is homozygous for the dominant trait

9 answers

2. I'm confused too. I would pick A or C. B and D are identical too. Either you have typos or bad question.

3. Right

4. Disagree. If dimples are dominant and one parent is homozygous, the child will always get a dominant gene.

5. What is B? Disagree. A would lead to all having the trait.

The answers are:
1.B
2.A
3.B
4.D
5.C

Thank you so much FrostyplayROBLOX! Your answer helped me so much! I got 100%!

100 thanks

100% wooooh thanks frosty

Thanks for the help

100% thank you!

100% still works in 2020

Frosty is right 100%.