Punnett Squares - Complete Dominance

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genotypes of offspring from a genetic cross.

Front

What does 'dominant' mean in genetics?

Back

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

Front

What does 'recessive' mean in genetics?

Back

A recessive trait is one that is only expressed in the phenotype when two copies of the allele are present.

Front

What is the genotype of an organism with white fur if black fur is dominant?

Back

ff

Front

What are the possible genotypes of a homozygous dominant organism?

Back

The genotype is represented as 'AA'.

Front

What are the possible genotypes of a homozygous recessive organism?

Back

The genotype is represented as 'aa'.

Front

What is the genotype of a heterozygous organism?

Back

The genotype is represented as 'Aa'.

Front

In a cross between RR and rr, what are the genotypes of the offspring?

Back

All offspring will be Rr.

Front

What is the dominant phenotype in Cody's pea plant experiment?

Back

smooth

Front

What is the probability of obtaining a straight fur offspring from a Bb x bb cross?

Back

50%.