mc qs

Question 1

Which of the following is NOT a potential result of mutations?

A) Drastic morphological changes
B) No detectable effects
C) Improved reproductive success
D) Guaranteed extinction

Answer 1

d

Question 1

What is a vestigial organ?

A) A structure that has no function
B) A structure that is in the process of evolving
C) A remnant of a once-functional structure
D) A recently evolved organ

Answer 1

c

Question 2

What drives divergence between populations?

A) Migration alone
B) Genetic drift, mutation, and natural selection
C) Random mutation alone
D) Natural disasters

Answer 2

b

Question 3

Which of the following processes increases genetic variation in a population?

A) Genetic drift
B) Natural selection
C) Migration
D) Bottleneck effect

Answer 3

c

Question 4

Which mechanism ensures a species’ evolutionary fate is independent after interbreeding barriers evolve?

A) Random mutation
B) Natural selection
C) Divergent evolution
D) Genetic isolation

Answer 4

d

Question 5

Recent research on pigeon genomes has determined that a single mutational difference in the protein encoded by the Tyrp1 gene is responsible for differences in feather color, including producing ash-red birds. Does this result support or not support Darwin’s theory of evolution, and why?

It supports Darwin’s theory by demonstrating the genetic basis to fitness differences among individuals in nature

It does not support Darwin’s theory by showing that variation among individuals depends on input of new mutations

It supports Darwin’s theory by providing a mechanistic explanation for the source of phenotypic variation among individuals

It does not support Darwin’s theory by demonstrating the genetic causes of inheritance, because Darwin mistakenly believed that inheritance involved a form of blending inheritance

Answer 5

c)

It supports Darwin’s theory by providing a mechanistic explanation for the source of phenotypic variation among individuals

Question 6

Which of the following ideas about populations does NOT reflect the views of the Balance School?

Negative selection is the predominant type of selection

Heterozygosity is high in natural populations

Polymorphism is high within populations

Selection favours genetic diversity

Answer 6

a)

Negative selection is the predominant type of selection

Question 7

What did Mendel’s discovery reveal about heredity?

Answer 7

Mendel discovered that inheritance involves discrete units of genetic information.