Genetics Basics Quiz

What does a Punnett square help predict?

• The physical appearance of an organism

• The genetic makeup of an organism

• The probability of offspring inheriting particular traits

• The lifespan of an organism

Tags

NGSS.HS-LS3-3

Which of the following represents a genotype?

• Blue eyes

• Bb

• Tall height

• Curly hair

What is the phenotype of an organism?

• The genetic makeup

• The physical appearance

• The number of chromosomes

• The type of cells

If an organism has two identical alleles for a trait, it is considered:

• Heterozygous

• Homozygous

• Dominant

• Recessive

In a monohybrid cross, what is being studied?

• Two traits

• One trait

• Multiple alleles

• Linked genes

Which of the following is an example of a heterozygous genotype?

• AA

• aa

• Aa

• BB

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

• The possible genotypes of the offspring

• The possible phenotypes of the offspring

• The alleles of the parents

• The number of chromosomes

If a homozygous dominant (AA) is crossed with a homozygous recessive (aa), what will be the genotype of the offspring?

• AA

• Aa

• aa

• A mix of AA and aa

Tags

NGSS.HS-LS3-1

What is the probability of obtaining a recessive phenotype in the offspring if both parents are heterozygous (Aa)?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-3

In a monohybrid cross, if one parent is homozygous dominant (BB) and the other is heterozygous (Bb), what is the probability of obtaining a homozygous dominant offspring?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3