Q3 AIMs review

How many pairs of chromosomes do humans have?

• 23

• 46

• 22

• 44

Tags

NGSS.HS-LS3-1

What is the structure of DNA?

• Double helix

• Single strand

• Triple helix

• Circular loop

Tags

NGSS.HS-LS1-1

Who is considered the father of genetics?

• Charles Darwin

• Gregor Mendel

• James Watson

• Francis Crick

What is a phenotype?

• The genetic makeup of an organism

• The physical appearance of an organism

• A type of genetic disorder

• A segment of DNA that codes for a protein

Tags

NGSS.HS-LS3-1

Brown fur is dominant to white fur in a species of rabbit and is represented with the alleles "B" and "b". What are the resulting percentages of genotypes of a cross between a homozygous dominant parent and a heterozygous parent?

• 50% BB, 50% Bb

• 75% BB, 25% Bb

• 100% BB

• 25% BB, 50% Bb, 25% bb

In corn, smooth kernels (K) are dominant to wrinkled kernels (k). A farmer crosses two corn plants that are heterozygous for kernel texture. What are the odds that the offspring will have smooth kernels?

• 25%

• 50%

• 75%

• 100%

Mendel crossed a pea plant that was heterozygous for round seeds with a plant that is homozygous recessive for wrinkled seeds. List the possible genotypes and phenotypes for the plant's offspring.

• Genotypes: 50% Rr, 50% rr; Phenotypes: 50% round, 50% wrinkled

• Genotypes: 100% Rr; Phenotypes: 100% round

• Genotypes: 25% RR, 50% Rr, 25% rr; Phenotypes: 75% round, 25% wrinkled

• Genotypes: 100% rr; Phenotypes: 100% wrinkled

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is a genotype?

• The physical characteristics of an organism.
• The environment in which an organism lives.
• The genetic makeup of an organism.
• The behavior of an organism.

Tags

NGSS.MS-LS4-4

What does homozygous mean?

• Having two of the same alleles for a particular gene.

• Having no alleles for a particular gene.
• Having one allele for a particular gene.
• Having two different alleles for a particular gene.

What does Heterozygous mean?

• Two different alleles for a particular gene
• Having multiple alleles for a particular gene
• Having no alleles for a particular gene
• Having identical alleles for a particular gene

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-3

NGSS.HS-LS4-4