Genetics & Punnett Squares

Front

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

Back

2

Front

T = tall and t = short. What is the phenotype for Tt?

Back

tall

Front

If a plant has the genotype Gg, what is its phenotype if G = green and g = yellow?

Back

green

Front

The outward appearance of an organism, regardless of its genes.

Back

phenotype

Front

The passing of physical characteristics from parent to offspring is __________.

Back

heredity

Front

What is the term for the genetic makeup of an organism?

Back

genotype

Front

What do we call different forms of a gene?

Back

alleles

Front

In a Punnett square, what do the letters on the top and side represent?

Back

the alleles of the parents

Front

What is the expected phenotype ratio in a monohybrid cross between two heterozygous parents (Tt x Tt)?

Back

3:1

Front

What is the term for a trait that is expressed only when two recessive alleles are present?

Back

recessive trait