Blood collected from a victim at a crime scene contains 30% adenine. A short distance away, a knife is found with traces of blood containing 20% thymine. What conclusion can be drawn from this evidence?
a. The blood on the knife belonged to the killer.
b. The blood on the knife belonged to the victim.
c. The knife was not the murder weapon.
d. Further DNA sequencing is required.
c. The knife was not the murder weapon.
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a. Migration leads to genetic variation. b. Dominant genes always occur more frequently in a population than recessive genes. c. Nonrandom mating may result in changes in gene frequency. d. The Hardy-Weinberg law applies to large, stable populations. e. Crossing over increases variation.
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What will be an ideal response?
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