Punnett Squares and Genetics Quiz

Which of the following best describes genotype?

• The physical appearance of an organism

• The genetic makeup of an organism

• The environment's effect on an organism

• The behavior of an organism

Tags

NGSS.HS-LS3-2

Which of the following best describes phenotype?

• The genetic makeup of an organism

• The physical appearance of an organism

• The number of chromosomes in an organism

• The DNA sequence of an organism

In a Punnett square, what do the letters outside the grid represent?

• The phenotypes of the parents

• The genotypes of the parents

• The phenotypes of the offspring

• The genotypes of the offspring

If a homozygous dominant plant (TT) is crossed with a homozygous recessive plant (tt), what will be the genotype of the offspring?

• TT

• Tt

• tt

• Tt and tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a monohybrid cross between two heterozygous individuals (Tt x Tt), what is the probability of obtaining a homozygous recessive offspring?

• 1

Tags

NGSS.HS-LS3-3

What is the purpose of a Punnett square?

• To determine the exact number of offspring

• To predict the probability of certain genotypes and phenotypes in offspring

• To measure the size of chromosomes

• To identify mutations in DNA

Tags

NGSS.HS-LS3-3

Which of the following is an example of a phenotype?

• Bb

• Blue eyes

• BB

• bb

What is the probability of obtaining a heterozygous offspring from a cross between two heterozygous parents (Aa x Aa)?

• 1

Tags

NGSS.HS-LS3-3

Which of the following represents a homozygous genotype?

• Aa

• Bb

• CC

• Dd

In a Punnett square, what do the letters inside the grid represent?

• The phenotypes of the parents

• The genotypes of the parents

• The phenotypes of the offspring

• The genotypes of the offspring