Genetics Day 2 Review

Front

What is incomplete dominance in genetics?

Back

Incomplete dominance is a form of inheritance where the phenotype of a heterozygote (e.g., RW) is intermediate between the phenotypes of the two homozygotes (e.g., RR and WW).

Front

What is the genotype of a plant with pink flowers if red (RR) and white (WW) flowers exhibit incomplete dominance?

Back

The genotype of a plant with pink flowers is RW.

Front

What is the definition of genotype?

Back

Genotype refers to the genetic makeup or allele combination of an organism.

Front

What is the definition of phenotype?

Back

Phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What does homozygous dominant mean?

Back

Homozygous dominant refers to having two identical dominant alleles for a trait (e.g., MM).

Front

What is the probability of offspring being bald if the parents are Bb and Bb?

Back

The probability of offspring being bald (bb) is 25%.

Front

If a plant has the genotype Aa, what are the possible gametes it can produce?

Back

The possible gametes are A and a.

Front

What is the expected phenotypic ratio of a monohybrid cross between two heterozygous parents (Aa x Aa)?

Back

The expected phenotypic ratio is 3:1 (3 dominant: 1 recessive).

Front

What is the expected genotypic ratio of a monohybrid cross between two heterozygous parents (Aa x Aa)?

Back

The expected genotypic ratio is 1:2:1 (1 homozygous dominant: 2 heterozygous: 1 homozygous recessive).

Front

What is the definition of a Punnett square?

Back

A Punnett square is a diagram used to predict the genotypes of a particular cross or breeding experiment.