6(F): Genetics

Front

What is the definition of genotype?

Back

The genetic combination of alleles.

Front

If red flowers are dominant to yellow flowers, and two heterozygous parents are crossed, what is the likelihood that the offspring will be red?

Back

75%.

Front

What is the genotype for a yellow plant if G = green and g = yellow?

Back

gg.

Front

What percent of offspring will have Round and Yellow seeds when crossing two homozygous plants (RRYY x rryy)?

Back

100%.

Front

What is the phenotypic ratio of offspring when two heterozygous (Tt) tall pea plants are crossed?

Back

3 tall: 1 short.

Front

What is the definition of phenotype?

Back

The physical expression of a trait.

Front

What does it mean for a trait to be dominant?

Back

A dominant trait is one that is expressed in the phenotype even when only one allele is present.

Front

What is a homozygous genotype?

Back

A genotype consisting of two identical alleles for a trait.

Front

What is a heterozygous genotype?

Back

A genotype consisting of two different alleles for a trait.

Front

What is the purpose of a Punnett square?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.