Deck 1: Introduction to Genetics

Question 1

By cutting off the tails of mice in 22 consecutive generations,August Weismann demonstrated that the final progeny had

A)no tails at all.
B)tails that were shorter than those of any previous generation.
C)longer tails than those of any previous generation.
D)tails the same length as those of the first and subsequent generations.
E)a mixture of tail lengths.

Answer 1

D
tails the same length as those of the first and subsequent generations .

Question 2

Which of the following is not a model genetic organism?

A)budding yeast,Saccharomyces cerevisiae
B)fruit fly,Drosophila melanogaster
C)human beings,Homo sapiens
D)worm,Caenorhabditis elegans
E)weed,Arabidopsis thaliana

Answer 2

C
h uman beings, Homo sapiens

Question 3

Organisms have similar genetic systems.This has led to advances in which fields?

A)pharmaceuticals
B)agriculture
C)medicine
D)all of the above
E)Organisms do not have similar genetic systems.

Answer 3

D
all of the above

Question 4

Which of the following is NOT a major division of genetics?

A)transmission genetics
B)molecular genetics
C)agricultural genetics
D)population genetics

Question 5

Which of the following are traits that a model genetic organism should have?

A)slow generation time
B)easily defined characteristics
C)small number of progeny
D)requires highly technical equipment to be studied
E)easily studied outdoors

Question 6

The early 1900s was pivotal for the science of genetics because of which of the following events?

A)the rediscovery of Gregor Mendel's scientific discoveries
B)Thomas Hunt Morgan's identification of the first fruit-fly mutant
C)Walter Sutton's proposal that chromosomes contain genes
D)all of the above
E)None of these events occurred in the 1900s.

Question 7

Why did the progeny in August Weismann's experiment continue to have tails,even though their parents' tails had been removed?

A)All necessary genetic material is present in sex cells.
B)The mice procreated prior to having their tails removed.
C)Mice tails can regenerate.
D)Tails don't have genetic material.
E)This is still a mystery we don't understand.