Punnett Square Review for 2nd 9 Week Exam

Front

What are the possible phenotype(s) of the offspring from a cross of Aa x Aa? (A-Brown hair; a-blond hair)

Back

75% Brown Hair and 25% Blond Hair

Front

Which of the following is heterozygous? MM, Mm, mm

Back

Mm

Front

Which of the following is homozygous dominant? RR, Rr, rr

Back

RR

Front

What did Gregor Mendel use to discover the principles that rule heredity?

Back

Pea Plant

Front

The different forms of a gene are called ---

Back

alleles

Front

What is a Punnett Square used for?

Back

To predict the genotypes and phenotypes of offspring from genetic crosses.

Front

Define genotype.

Back

The genetic makeup of an organism, represented by letters (e.g., AA, Aa, aa).

Front

Define phenotype.

Back

The observable physical characteristics of an organism, determined by its genotype.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene (e.g., AA or aa).

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene (e.g., Aa).