Unit 6 - DNA and Genetics Review

In humans, attached earlobes (e) is due to a recessive trait and detached earlobes (E) is the dominant trait. What percentage of the offspring of a heterozygous female and a homozygous male would be expected to have detached earlobes?

• 75%
• 10%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Refer to the codon chart. The mRNA sequence has the code CAG. It is most likely to bond with a tRNA that has which amino acid?

• Stop

• Met

• Val

• Gly

Tags

NGSS.HS-LS1-1

Skin color in humans is a polygenic inheritance system. A woman with the genotype aabbcc mates with a man who is AABBCC what would the offspring genotype look like?

• AaBbCc
• AaBBcc
• aaBBCC
• AABBCC

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A DNA strand has the following bases: CGT ACG. What are the bases on the complimentary strand?

• ATC TGA
• TGC GCA
• AGT TCA
• GCA TGC

What is the name of this process: mRNA to tRNA to protein.

• transcription
• replication
• mutation
• translation

Widow's peak (W) is dominant to no widow's peak (w). A woman who is heterozygous for a widow's peak marries a man who does not have a widows peak. What is the probable genotypic ratio of the offspring?

• 100% Ww : 0% ww

• 25% Ww : 75% ww

• 75% Ww : 25% ww

• 50% Ww : 50% ww

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What did the original DNA sequence look like that produced a mRNA strand with the sequence UGC AUU?

• GCU UAA
• TGC TAA
• AGC ATT
• ACG TAA

DNA replication is a semiconservative process because one half of the new strand is the parental strand.

• True

• False

Sickle cell anemia is a recessive trait. If a woman who is homozygous dominant (not affected) marries a man who has sickle cell anemia, what would be true about the offspring's genotype?

• A genotype that is different from both parents

• The same genotype as both parents

• A phenotype that was different from the parents

• The genotype of one of the parents

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the genotypes of the parents (generation 1) in the pedigree?

• Dad is homozygous recessive

  Mom is homozygous dominant

• Both are heterozygous

• Both are homozygous recessive

• Dad is homozygous dominant

  Mom is homozygous recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2