Pearson Chapter 9 Review

What traits are influenced by more than one gene?

• codominant

• homozygous

• linked

• polygenic

How many genes are involved in determining eye color?

• only 1

• 2 to 15

• 30 to 45

• 100

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NGSS.HS-LS3-3

Besides polygenic inheritance, what factor may also affect skin color?

• codominance

• environment

• metabolism

• sex linkage

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NGSS.HS-LS3-2

How would the DNA profiles of a mother and her daughter compare?

• The daughter's DNA fragments are the same as the mother's fragments.

• More than half of the daughter's DNA fragments match the mother's fragments.

• Some of the daughter's DNA fragments match some of the mother's fragments.

• The daughter's DNA fragments only match the fragments of her father.

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Why must DNA fragments be denatured during the polymerase chain reaction?

• B) The repeated gene sequences are not present in double-stranded DNA.

• C) The primer must bind to a single-stranded template to synthesize double-stranded DNA.

• D) STRs have DNA sequences that vary in number.

What does the acronym STR represent?

• A) sampled terminal recombinants

• B) short tandem repeats

• C) string theory research

• D) system temperature results

What conclusion may be made if a suspect's DNA profile doesn't match the DNA profile from a crime scene blood sample?

• A) The suspect was never at the crime scene.

• B) The blood sample was degraded in some way.

• C) There is no DNA in a blood sample.

• D) The blood sample did not come from the suspect.

Why do different people have different DNA profiles?

• A) They have completely different kinds of STR locations.

• B) They have different numbers of the same STRs.

• C) PCR generates some sequences more than other sequences.

• D) All 300 billion base pairs are analyzed for individuals.

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NGSS.HS-LS3-2

NGSS.HS-LS3-3

What is the function of Taq polymerase?

• to add nucleotides to a DNA primer

• to break the hydrogen bonds of DNA strands

• to make more repeats of the STR sequence

• to separate the sugars and phosphates in DNA

Which item is used to produce genetic profiles of people?

• RNA polymerase

• Punnett squares

• pedigree analysis

• STRs