Introduction to Genetics

Front

What does the letter 'G' represent in genetics?

Back

Dominant green allele.

Front

What does the letter 'g' represent in genetics?

Back

Recessive yellow allele.

Front

If a fish has a Gg genotype, what will its phenotype be?

Back

Green.

Front

What is the definition of phenotype?

Back

The observable physical characteristics of an organism.

Front

What is the definition of genotype?

Back

The genetic makeup of an organism.

Front

What is a heterozygous genotype?

Back

A genotype with two different alleles for a trait (e.g., Yy).

Front

What is a homozygous genotype?

Back

A genotype with two identical alleles for a trait (e.g., YY or yy).

Front

What is the genotype of a heterozygous yellow pea plant?

Back

Yy.

Front

What is the purpose of a Punnett square?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

What is the difference between phenotype and genotype?

Back

Phenotype is the physical expression of traits, while genotype is the genetic code.