Heredity and Punnett Squares

Front

The genotype 'tt' is ____.

Back

homozygous recessive

Front

B = brown fur & b = white fur. In the punnett square, what is the probability for white fur?

Back

50%

Front

The different forms of a gene are called ____.

Back

alleles

Front

Tongue rolling is dominant over not being able to roll your tongue. Which letter would represent the dominant allele?

Back

T

Front

How many alleles (letters) do each person carry for a trait?

Back

2

Front

What is a Punnett Square used for?

Back

To predict the genotypes of offspring from parental genotypes.

Front

Define 'allele'.

Back

An allele is a variant form of a gene.

Front

What does 'homozygous' mean?

Back

Having two identical alleles for a particular gene.

Front

What does 'heterozygous' mean?

Back

Having two different alleles for a particular gene.

Front

If a trait is dominant, what does that mean?

Back

It means that the trait will be expressed even if only one dominant allele is present.