Genetics Support Biology

Front

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

Back

gg

Front

What does heterozygous mean?

Back

The alleles are different.

Front

Which genotype is homozygous dominant?

Back

AA

Front

How many alleles does a child inherit from each parent for each trait?

Back

1

Front

What is a gene?

Back

A piece of DNA on a chromosome that codes for a trait.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means the alleles are the same; heterozygous means the alleles are different.

Front

What is the phenotype of a plant with the genotype Gg?

Back

Green (dominant trait).

Front

What is the purpose of a Punnett square?

Back

To predict the genotypes of offspring from parental genotypes.

Front

Define allele.

Back

An alternative form of a gene that can produce different traits.

Front

What is the significance of dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in heterozygous conditions.