Genetics Review

Front

What is a genotype?

Back

A genotype is the genetic makeup of an individual, consisting of the alleles inherited from both parents.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a specific gene, such as YY or yy.

Front

What does dominant mean in genetics?

Back

A dominant allele is one that expresses its trait even when only one copy is present in the genotype.

Front

What is the genotype for a homozygous dominant trait?

Back

The genotype for a homozygous dominant trait is represented as YY.

Front

What is the genotype for a homozygous recessive trait?

Back

The genotype for a homozygous recessive trait is represented as yy.

Front

What is incomplete dominance?

Back

Incomplete dominance is a type of inheritance where the traits of two alleles blend together in the phenotype.

Front

What is co-dominance?

Back

Co-dominance is a type of inheritance where both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Front

How many alleles does an offspring receive from each parent?

Back

An offspring receives one allele from each parent for a specific trait.

Front

What does a lower case letter represent in a Punnett square?

Back

A lower case letter represents a recessive allele in a Punnett square.

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.