Biology - Unit 7 (Genetics)

Front

What is a heterozygous genotype?

Back

A genotype consisting of two different alleles for a particular gene, such as Tt.

Front

What is incomplete dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype, such as tan offspring from a brown (BB) and white (WW) owl.

Front

What does homozygous mean?

Back

A genotype consisting of two identical alleles for a particular gene, such as BB or bb.

Front

What does heterozygous mean?

Back

A genotype consisting of two different alleles for a particular gene, such as Tt.

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

What does dominant mean in genetics?

Back

An allele that expresses its phenotype even in the presence of a recessive allele.

Front

What does recessive mean in genetics?

Back

An allele that only expresses its phenotype when two copies are present (homozygous recessive).

Front

What is the probability of an event?

Back

The likelihood of a specific outcome occurring, often expressed as a fraction or percentage.

Front

How do you calculate the probability of offspring genotypes?

Back

By using a Punnett square to determine the ratio of different genotypes from the parental alleles.

Front

What is the genotype for a short plant if T = tall and t = short?

Back

tt.