Genetics- Punnett Squares

Front

What is it called when the alleles in a genotype are different?

Back

Heterozygous

Front

In a Punnett square, what is the probability for white fur if B = brown fur and b = white fur?

Back

50%

Front

What is the probability of heterozygous offspring in a Punnett square?

Back

50%

Front

In a Punnett square, a lower case letter stands for a ____________ allele.

Back

recessive

Front

An organism’s genetic makeup; the pair of alleles for a trait is called a(n) _____________.

Back

genotype

Front

What does a capital letter represent in a Punnett square?

Back

A dominant allele

Front

What is the phenotype of an organism?

Back

The physical expression of a trait.

Front

If a homozygous dominant organism is crossed with a homozygous recessive organism, what will be the genotype of the offspring?

Back

All offspring will be heterozygous.

Front

What is the expected phenotypic ratio of a monohybrid cross?

Back

3:1

Front

What is a Punnett square used for?

Back

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