genetics, punnett squares, heredity

Front

What is a homozygous allele pair?

Back

A homozygous allele pair consists of two identical alleles for a particular gene, such as BB or bb.

Front

What does genotype refer to?

Back

Genotype refers to the possible combination of alleles in a gene.

Front

What is the probability of getting white fur (b) if the alleles are Bb and Bb?

Back

The probability for white fur is 25%.

Front

How is a dominant allele represented when writing allele pairs?

Back

A dominant allele is written as a capital letter.

Front

What does a Punnett square illustrate?

Back

A Punnett square illustrates the possible genetic combinations from a cross between two organisms.

Front

What is the phenotype?

Back

The phenotype is the physical expression or characteristics of a genotype.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in a heterozygous genotype.

Front

If T = tall and t = short, what is the genotype for a short plant?

Back

The genotype for a short plant is tt.

Front

What is the expected phenotypic ratio in a monohybrid cross?

Back

The expected phenotypic ratio in a monohybrid cross is 3:1.

Front

What does it mean if an organism is heterozygous?

Back

An organism is heterozygous if it has two different alleles for a particular gene, such as Bb.