Genetics

Front

What is a homozygous recessive allele?

Back

A homozygous recessive allele is a pair of identical alleles for a trait that are both recessive, represented as 'tt'.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism (e.g., TT, Tt, tt), while phenotype refers to the observable traits (e.g., tall or short).

Front

What does a Punnett square represent?

Back

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

Front

What is a genotype?

Back

The genotype is the exact genetic makeup of an organism, such as RR, Tt, or PP.

Front

Who is known as the 'father' of modern genetics?

Back

Gregor Mendel is considered the 'father' of modern genetics for his work on inheritance patterns in pea plants.

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present (e.g., T in Tt).

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present (e.g., tt).

Front

What is the purpose of a test cross?

Back

A test cross is used to determine the genotype of an organism with a dominant phenotype by crossing it with a homozygous recessive organism.

Front

What is the law of segregation?

Back

The law of segregation states that during the formation of gametes, the two alleles for a trait separate from each other.

Front

What is the law of independent assortment?

Back

The law of independent assortment states that alleles for different traits are distributed to gametes independently of one another.