Genetics

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a blended phenotype.

Front

What percent of the offspring would be tan when you cross BbxBb?

Back

25% of the offspring would be tan.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, often called purebred.

Front

What are the possible genotypes for a cross that results in TT = 25%, Tt = 50%, tt = 25%?

Back

The possible genotypes are TT, Tt, and tt.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, such as blue eyes.

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.

Front

What is a genotype?

Back

A genotype is the genetic constitution of an individual, represented by the alleles inherited from the parents.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene.

Front

What is a Punnett square used for?

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 significance of the 1:2:1 ratio in genetics?

Back

The 1:2:1 ratio represents the expected genotypic ratio from a monohybrid cross between two heterozygous parents.