Deck 26: Molecular Evolution

Question 1

Gene families are .

A)groups of genes with similar function that were generated from duplication events
B)entire genomes
C)always in operons
D)have no role in evolution

Answer 1

A

Question 2

The African Eve hypothesis is based on .

A)Y chromosome analysis
B)identification of junk DNA sequences
C)mitochondrial DNA sequences
D)ribosomal RNA sequencing

Answer 2

C

Question 3

The transfer of genetic information from one species to another species is called .

A)recombination
B)vertical gene transfer
C)horizontal gene transfer
D)conjugation

Answer 3

C

Question 4

Which was likely the first molecule of life?

A)DNA
B)RNA
C)protein
D)lipids

Question 5

Mitochondrial DNA .

A)has a high mutation rate
B)is useful for determining paternal ancestry
C)has a low mutation rate
D)is only present in animal cells

Question 6

Evolution relies upon .

A)mutations made in somatic cells only
B)mutations occurring in gametes
C)mutations that result in altered protein function of somatic cells
D)mutations in mRNA only

Question 7

Gene duplication generates new genes with novel roles.

Question 8

Life likely evolved under .

A)a reducing atmosphere
B)cold conditions
C)oxidizing conditions
D)dehydrating conditions

Question 9

Recent evolutionary changes are easier to identify from .

A)DNA with slow mutation rates
B)DNA with high mutation rates
C)ribosomal RNA sequences
D)Y chromosomes

Question 10

Which of the following helps support the RNA World hypothesis?

A)ribozymes
B)catalytic RNAs
C)genetic information encoded on RNA
D)all of the above