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This set of MCQs helps you brush up on important biology topics and prepare you to dive into skill practice.
Term for homozygous organisms that display two dominant phenotypes at the same time.
Incomplete dominance
Multiple alleles
Codominance
Linked genes
Red/green color blindness is a recessive trait. A woman who is a carrier for this allele marries a normal-vision male. What is the probability that they will have a child who is color blind?
1/2
3/4
1
1/4
If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true.
All sons will have hemophilia
50% of daughters and 50% of sons have hemophilia
All daughters will have hemophilia
100% of sons have hemophilia and 100% of daughters are carriers
What is a possible phenotype of a child that results from a woman with type AB blood and a man with type A blood?
O
A
AA
AO
In the second generation-how many people are carriers of the trait?
3
5
6
2
The genes for a trait are distributed to each egg and sperm by chance and _____ of other traits.
Independent
Dependent
Both of this two
None of these
____are the segment of DNA on a chromosome that control traits.
Trait
Alleles
Cells
Genes
Which of these is homozygous dominant?
aa
AA
aA
Aa
