Unit 8 Genetics Review

Front

What is the genotype of a person with type O blood?

Back

ii

Front

What does a dihybrid cross show?

Back

The possible outcomes of two traits/characters.

Front

What percentage of offspring will be homozygous recessive when a homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant?

Back

0%.

Front

In a heterozygous genotype, which allele takes over in the phenotype?

Back

The dominant allele.

Front

What is Tt an example of?

Back

Heterozygous.

Front

Define homozygous dominant.

Back

An organism with two identical dominant alleles (e.g., AA).

Front

Define homozygous recessive.

Back

An organism with two identical recessive alleles (e.g., aa).

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism.

Front

What is a genotype?

Back

The genetic constitution of an individual, represented by alleles.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even in the presence of a recessive allele, while recessive alleles only express their trait when paired with another recessive allele.