Sophia Human Biology
Milestone 6
1
Bert has blonde hair (b). Molly has brown hair (B), but her genotype is Bb, meaning she carries a
recessive blonde allele.
What is the likelihood of Bert and Molly's second child having brown hair?
25%
75%
50%
100%
CONCEPT
Punnett Squares
2
Which of the following does DNA replication produce?
One molecule with extra DNA, causing the nucleus to divide
, New DNA only
Two molecules, each of which is half new and half old DNA
New RNA only
CONCEPT
DNA Replication
3
A father has red-green colorblindness, his wife does not, nor is she a carrier.
What are the odds that their daughter is a carrier for red-green colorblindness?
50%
25%
0%
100%
Milestone 6
1
Bert has blonde hair (b). Molly has brown hair (B), but her genotype is Bb, meaning she carries a
recessive blonde allele.
What is the likelihood of Bert and Molly's second child having brown hair?
25%
75%
50%
100%
CONCEPT
Punnett Squares
2
Which of the following does DNA replication produce?
One molecule with extra DNA, causing the nucleus to divide
, New DNA only
Two molecules, each of which is half new and half old DNA
New RNA only
CONCEPT
DNA Replication
3
A father has red-green colorblindness, his wife does not, nor is she a carrier.
What are the odds that their daughter is a carrier for red-green colorblindness?
50%
25%
0%
100%
