Day 64 monohybrid crosses

Front

What is a monohybrid cross?

Back

A genetic cross between individuals that differ in a single trait, typically involving one pair of contrasting traits.

Front

Define genotype.

Back

The genetic makeup of an organism, represented by alleles (e.g., TT, Tt, tt).

Front

Define phenotype.

Back

The observable physical characteristics of an organism, determined by its genotype.

Front

What does homozygous mean?

Back

An organism with two identical alleles for a particular trait (e.g., TT or tt).

Front

What does heterozygous mean?

Back

An organism with two different alleles for a particular trait (e.g., Tt).

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Front

If a homozygous tall plant (TT) is crossed with a homozygous short plant (tt), what are the possible genotypes of the offspring?

Back

100% Tt.

Front

What is the probability of obtaining a homozygous recessive offspring (tt) from a cross between Tt and tt?

Back

50%.

Front

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

Back

3 tall : 1 short.

Front

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

Back

1 TT : 2 Tt : 1 tt.