Exploring Mendelian Genetics Quiz

What is the primary purpose of a Punnett square in genetics?

• To determine the exact genetic makeup of an individual

• To predict the probability of offspring inheriting particular traits

• To identify mutations in DNA sequences

• To map the entire genome of an organism

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NGSS.HS-LS3-3

Which of the following best describes a phenotype?

• The genetic makeup of an organism

• The physical expression of a trait

• The combination of alleles in an organism

• The process of cell division

If a plant is homozygous dominant for a trait, which of the following allele combinations does it have?

• Aa

• aa

• AA

• aA

In Mendelian genetics, what does it mean if an allele is described as recessive?

• It is always expressed in the phenotype

• It is only expressed when two copies are present

• It is more common in the population

• It can mask the presence of a dominant allele

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

• BB

• Bb

• bb

• bB

How does a Punnett square help in predicting the traits of offspring?

• By showing the exact genetic sequence of the parents

• By illustrating all possible combinations of parental alleles

• By determining the environmental factors affecting traits

• By calculating the mutation rate in genes

If a homozygous dominant plant (AA) is crossed with a homozygous recessive plant (aa), what will be the genotype of the offspring? MAKE THE PUNNETT SQUARE ON PAPER!!!

• AA

• Aa

• aa

• aA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the probability of obtaining a homozygous recessive offspring from two heterozygous parents (Aa x Aa)? MAKE THE PUNNETT SQUARE ON PAPER!!!

• 0%

• 25%

• 50%

• 75%

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NGSS.HS-LS3-3

Which of the following statements is true about dominant alleles?

• They are always more common in a population

• They mask the expression of recessive alleles

• They are only expressed in homozygous conditions

• They are always associated with beneficial traits

A plant with genotype Aa is crossed with another plant with genotype Aa. What is the probability of obtaining an offspring with genotype AA? MAKE THE PUNNETT SQUARE ON PAPER!!

• 25%

• 50%

• 12.5%

• 6.25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3