Punnett Squares and Genetics Flashcard

Front

What do the letters inside a Punnett square represent?

Back

The genotypes of the offspring.

Front

What is the genotype of the offspring when a homozygous dominant plant (TT) is crossed with a homozygous recessive plant (tt)?

Back

Tt.

Front

In a monohybrid cross between two heterozygous individuals (Tt x Tt), what is the probability of obtaining a homozygous recessive offspring?

Back

Front

Which of the following represents a homozygous genotype: Aa, Bb, CC, or Dd?

Back

CC.

Front

If a parent is homozygous for the dominant trait tall, what are his/her alleles?

Back

TT.

Front

What is a Punnett square used for?

Back

To predict the genotypes and phenotypes of offspring from genetic crosses.

Front

Define homozygous genotype.

Back

A genotype consisting of two identical alleles for a particular gene.

Front

Define heterozygous genotype.

Back

A genotype consisting of two different alleles for a particular gene.

Front

What is the phenotype of a plant with genotype Tt?

Back

Tall (assuming T is dominant for tallness).

Front

What does it mean if an organism is homozygous recessive?

Back

It has two recessive alleles for a trait (e.g., tt).