Forensics DNA Profiling Review

Because DNA is composed of alternating sugar and phosphate molecules, DNA is known as a double helix.

• True

• False

Most females have one X and one Y (XY) sex chromosome.

• True

• False

To calculate the percentage of people who have a particular allele, population studies are conducted to collect data.

• True

• False

Tags

NGSS.HS-LS2-2

Humans share common ancestors. Therefore the DNA STR profile of all humans is the same.

• True

• False

Tags

NGSS.HS-LS4-1

mtDNA is used to trace ancestry through the female line.

• True

• False

Tags

NGSS.HS-LS4-1

Except for identical twins, no two people on earth have the same:

• physical characteristics.

• DNA.

• skeletal type.

• blood group.

Tags

NGSS.HS-LS3-2

People are always shedding cells. Therefore DNA can be recovered from:

• saliva

• skin cells

• semen

• all of these

The term that describes a picture of homologous pairs of human chromosomes is:

• karyotype.

• genetics.

• archetype.

• All of these choices.

The 95 percent of noncoding DNA is involved in:

• blueprint production.

• genetic material.

• cell regulation.

• DNA fingerprinting.

If one person has two alleles that are the same for a specific STR, then that person is considered to have:

• rare occurring alleles.

• heterozygous genotypes.

• homozygous genotypes.

• frequently occurring alleles.