Genetics Practice AYER 2023

Front

What is a genotype?

Back

The actual genes present in an organism.

Front

True or false: Mutations create genetic diversity.

Back

True

Front

If a mother duck is homozygous for long beak length (BB) and the father is heterozygous (Bb), what percentage of their offspring will have long beaks?

Back

100%.

Front

What is the phenotype of an organism?

Back

The physical expression of the genes, such as appearance.

Front

What is the matching sequence for the DNA strand AAGCTAT?

Back

TTCGATA.

Front

What is a dominant trait?

Back

A trait that is expressed when at least one dominant allele is present.

Front

What is a recessive trait?

Back

A trait that is only expressed when two recessive alleles are present.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is a Punnett square used for?

Back

To predict the genotypes of offspring from a genetic cross.