If a brown-furred organism was heterozygous for the fur color gene, and black was the other color allele, which of the following is a TRUE statement?
- Black is the recessive allele.
- Brown and black fur are codominant.
- The organism has two brown alleles.
Please select an option
The A, B, and O blood type system is an example of:
- both multiple alleles and codominance
- codominance
- multiple alleles
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Why is colorblindness seen more often in males than in females?
- The recessive gene cannot be expressed when there are two X chromosomes.
- The recessive gene resides on the X chromosome, and it cannot be masked by a second dominant gene (since males only have one X chromosome).
- The recessive gene resides on the Y chromosome, which is only found in males.
Please select an option