Genetics Vocab/PSquare #1

Front

What is a heterozygous allele combination?

Back

A heterozygous allele combination consists of two different alleles for a trait, such as Tt.

Front

What is a homozygous allele combination?

Back

A homozygous allele combination consists of two identical alleles for a trait, such as TT or tt.

Front

What is the definition of genotype?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it carries.

Front

What is the definition of phenotype?

Back

Phenotype refers to the observable physical traits of an organism, which are influenced by its genotype.

Front

What is the probability of producing heterozygous offspring from a cross between two heterozygous parents (Tt x Tt)?

Back

The probability of producing heterozygous offspring is 50%.

Front

What does codominance mean in genetics?

Back

Codominance occurs when both alleles in a heterozygous organism contribute equally to the phenotype.

Front

What is the purpose of a Punnett square?

Back

A Punnett square is used to predict the genetic outcomes of a cross between two organisms.

Front

What does it mean if an organism is described as purebred?

Back

A purebred organism has a homozygous genotype, meaning it has identical alleles for a trait.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in a heterozygous genotype.

Front

What is an allele?

Back

An allele is a variant form of a gene that can produce different traits.