Genetics Beyond Mendel

What is incomplete dominance?

• A trait where the dominant allele completely masks the recessive allele.

• A scenario where both alleles are equally expressed.

• A situation where the dominant allele is not fully expressed over the recessive allele.

• A condition where the recessive allele dominates over the dominant allele.

What results from crossing two pink snapdragons?

• Offspring can be red, white, or pink.

• All offspring will be pink.

• All offspring will be white.

• All offspring will be red.

What does codominance mean?

• None of the alleles are expressed.

• One allele hides the effects of another allele.

• The dominant allele partially expresses over the recessive allele.

• Both alleles are expressed equally.

What are polygenic traits?

• Traits controlled by multiple genes.

• Traits influenced by environmental factors only.

• Traits not influenced by genes.

• Traits controlled by a single gene.

Which blood type is known as the universal donor?

• Type AB

• Type B

• Type A

• Type O

What antigens does type AB blood have?

• No antigens

• Both A and B antigens

• B antigens only

• A antigens only

What is hemophilia?

• A dominant genetic disorder

• A disorder affecting blood clotting

• A polygenic trait

• A codominant trait

How is hemophilia inherited?

• Through autosomes

• As a dominant trait

• As a sex-linked recessive trait

• Through environmental factors

Why are males more likely to have hemophilia?

• Because they inherit two dominant alleles

• Because they inherit one X and one Y chromosome

• Because they inherit two X chromosomes

• Because they inherit two Y chromosomes

What does a Punnett square help predict?

• The exact traits of offspring

• The probability of inheriting certain traits

• The environmental effects on genetics

• The mutations that will occur in the offspring