Genetics Vocab & Intro to Punnett Squares

Front

What does genotype refer to?

Back

The possible combination of alleles in a gene.

Front

Which of the following represents a homozygous recessive genotype?

Back

aa

Front

What is the definition of phenotype?

Back

The physical trait of an organism.

Front

What allele combination should go in the missing box if the options are AA, Aa, aa?

Back

Aa

Front

If B = black fur and b = brown fur, what color fur would Bb be?

Back

Black.

Front

What is an allele?

Back

An alternative form of a gene that can produce different traits.

Front

What does dominant mean in genetics?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What does recessive mean in genetics?

Back

An allele that only expresses its trait when two copies are present.

Front

What is a Punnett square used for?

Back

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

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous has two identical alleles; heterozygous has two different alleles.