Mendelian Genetics

Front

What is a genotype?

Back

The genetic makeup of an organism, consisting of the alleles inherited from its parents.

Front

What does homozygous dominant mean?

Back

An organism with two identical dominant alleles for a trait (e.g., AA).

Front

What is the probability of having brown hair if B = brown hair and b = blonde hair?

Back

75%.

Front

What is a purebred organism?

Back

An organism that carries two identical alleles for a given trait, either dominant or recessive.

Front

What is a hybrid organism?

Back

An organism that carries one dominant and one recessive allele for a trait.

Front

What is a phenotype?

Back

The observable physical characteristics of an organism, determined by its genotype.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the physical expression of that makeup.

Front

What does it mean if an organism is heterozygous?

Back

It has two different alleles for a trait (e.g., Aa).

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible allele combinations.

Front

What is the law of segregation?

Back

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