Reporting Category 2 Review questions

A horse has 64 chromosomes. When a stallion’s germ cells go through meiosis, how many chromosomes will the daughter cells have?

• 64

• 32

• 46

• 23

Why is genetic variation important?

• It makes meiosis a very simple process and gives offspring a higher chance of survival.

• It takes less energy and requires only one parent.

• Mutations are always helpful to organisms and never cause problems.

• Having diversity in the population protects it from genetic diseases and gives offspring a higher chance of survival.

What are some things that contribute to genetic variation?

• mutations, crossing over, DNA contributed by both parents

• mutations, diploid cells, genotypes

• crossing over, phenotypes, sexual reproduction

• crossing over, genotypes, asexual reproduction

Mendel’s Law of Segregation states that:

• Genes do not influence each when sorting alleles into gametes; every possible combination of alleles for every gene is equally likely to occur.

• Allele pairs separate during gamete formation, and then randomly unite at fertilization.

• Race shouldn’t be a reason to separate people into groups.

• Cells divide into two new cells after mitosis.

Which of these diagrams show the result of a cross between a heterozygous seed plant and a homozygous wrinkled seed plant?

• 
• 
• 
• 

The tall allele “T” is dominant to the short allele “t” in Mendel’s pea plants. You examine a pea plant that exhibits the tall phenotype. What is its genotype?

• Tt

• TT

• tt

• Tt or TT

A calico cat has patches of orange and black fur. One parent had black fur, the other had orange. Based on the information, what is the most likely pattern of inheritance?

• sex-linked recessive

• codominance

• incomplete dominance

• heterozygosity

A purebread brown male hamster was mated with a purebred golden female hamster. All the offspring were brown. Which of the following describes the allele for the color “golden”?

• recessive

• sex-linked

• dominant

• codominant

What would the ratio for genotypes be for this Punnett Square?

• 2Bb:2bb
• 2BB:2Bb
• 1BB:2Bb:1bb
• 4Bb

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NGSS.HS-LS3-1

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He is known as the father of modern day genetics.

• Gregory Mendel
• Greg Mendel
• Gregor Mendel
• Grace Mendel

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NGSS.HS-LS3-1