Punnett Squares

Front

What does the letter 'G' represent in a Punnett square when G = green and g = yellow?

Back

G represents the dominant allele for green color.

Front

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

Back

The genotype for a green plant can be either GG (homozygous dominant) or Gg (heterozygous).

Front

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

Back

The genotype for a yellow plant is gg (homozygous recessive).

Front

Which of the following alleles is homozygous recessive: TT, Tt, or tt?

Back

tt is the homozygous recessive allele.

Front

What is the definition of phenotype?

Back

Phenotype is the physical appearance or observable traits of an organism.

Front

What is the definition of genotype?

Back

Genotype is the genetic makeup or combination of alleles of an organism.

Front

If an organism has the genotype AA or Aa, what will be its phenotype?

Back

The phenotype will be dominant.

Front

What is a Punnett square used for?

Back

A Punnett square is a graph used to predict the possible genotypes of offspring in a given genetic cross.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene.