Unit 6 AP Biology Test Prep 1

The image shows an example of

• a normal karyotype

• an aneuploidy

• a polyploidy

• a translocation

Trisomy 21 can result from

• epistasis

• dominance

• crossing over

• nondisjunction

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What happens when lactose attaches to the repressor?

• The repressor is removed and RNA Polymerase will transcribe the genes.

• The CAP will be removed and RNA Polymerase will be blocked from transcribing.

• The lac genes will be removed as introns.

• The pre-mRNA will be edited to a mature mRNA transcript.

A coding section of DNA consists of 96 nucleotides (all of which get expressed), how many amino acids will this code for?

What is the purpose of the repressor in the operon pathway?

• promote transcription of the genes

• prevent wasting resources when the proteins are not needed

• stimulate the RNA polymerase production

• remove telomeres from the ends of the chromosome

Whose DNA was found at the crime scene?

• Victim

• Suspect 1

• Suspect 2

• Suspect 3

What are the genotypes of individuals 3 and 4 in the second generation?

• Bi, O

• Ai, Bi

• O, Ai

• BB, Ai

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following would cause a frameshift mutation in the following coding sequence?

5' GAC TTC GTA CCG TGA CTC 3'

• substituting the first C for a T

• reversing the TTC to read CTT

• deleting the eighth nucleotide in the sequence

• deleting the last C

Tags

NGSS.HS-LS3-2

In the following sequence, substituting a T for the C in the template strand of DNA at nucleotide 6 would cause what kind of mutation?

3' ATT GAC TCG ACC GTG 5'

• silent mutation

• nonsense mutation

• missense mutation

• frameshift mutation

Tags

NGSS.HS-LS3-2

What would happen if there was a mutation along the continuous strand?

• all of the daughter cells would contain the mutation

• 1/2 the daughter cells would contain the mutation

• the protein would not be functional

• telomerase would edit the mutation

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2