Ch 26 Questions

Front

What is a recessive trait?

Back

A recessive trait is a genetic trait that is expressed only when two recessive alleles are present (e.g., 'ee').

Front

What does GMO stand for?

Back

GMO stands for genetically modified organism.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, comprised of two alleles for each trait.

Front

What is a phenotype?

Back

A phenotype is the physical representation of the genes an organism has, such as hair color.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a phenotype that is a blend of both traits.

Front

If B codes for black coats and b for white coats in horses, what color would Bb individuals be under incomplete dominance?

Back

Bb individuals would have gray coats.

Front

What is an allele?

Back

An allele is a variant form of a gene that can produce different traits.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in heterozygous conditions.

Front

What is a gene?

Back

A gene is a segment of DNA that contains the instructions for building a specific protein or trait.

Front

What is the principle of segregation?

Back

The principle of segregation states that during the formation of gametes, the two alleles for a trait separate from each other.