Genetic ELL

Front

What did Mendel conclude from his experiments with purple and white-flowered plants?

Back

Traits are inherited as separate units.

Front

What is the set of alleles for a trait of an organism called?

Back

Genotype.

Front

What is an example of the law of segregation?

Back

Parent 1 has the dominant trait.

Front

What is the genotype of a colorblind male?

Back

X^nY.

Front

What are the probabilities of the phenotype(s) of the offspring if A is brown hair and a is blond hair?

Back

75% Brown Hair and 25% Blond Hair.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.

Front

Define phenotype.

Back

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is the purpose of a Punnett square?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What does it mean for a trait to be dominant?

Back

A dominant trait is one that will express itself in the phenotype even if only one allele is present.

Front

What does it mean for a trait to be recessive?

Back

A recessive trait is one that will only express itself in the phenotype if two copies of the allele are present.