Heredity Practice

Front

What is heredity?

Back

Heredity is the passing of traits from parents to offspring through genes.

Front

What is a dominant trait?

Back

A dominant trait is a genetic trait that is expressed in the phenotype even when only one copy of the allele is present.

Front

What is a recessive trait?

Back

A recessive trait is a genetic trait that is masked by the presence of a dominant trait and is only expressed when two copies of the allele are present.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as TT or tt.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Tt.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Front

What is the probability of obtaining a homozygous recessive offspring from a cross between two heterozygous parents?

Back

25%.

Front

What is the significance of the F1 generation?

Back

The F1 generation is the first filial generation, which results from a cross between two parental (P) generations.