Imagine that a cell has a genetic mutation so that the primase enzyme is unable to make RNA strands
Assuming that all of the other enzymes directly involved in DNA replication are still functional in
these cells, how much of the process of DNA replication would you expect to see in these cells?
a. The leading strand would be synthesized, but not the lagging strand.
b. None of it at all, no part of the DNA replication process could occur.
c. The DNA helix would be unwound by helicase, but no new strands will be produced at all.
d. Both the leading and lagging strand would be synthesized, but pieces of discontinuous
strands would not be joined together.
e. DNA replication would still proceed completely, since RNA strands are not part of the
final product of DNA replication.
C
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As oomycetes infected and killed potato plants during the Irish Potato Famine, oomycetes can be classified as a(n) _________________. Select all correct choices
A. virulent pathogen B. biotrophic pathogen C. avirulent pathogen D. necrotrophic pathogen
In Africa and other parts of the world, malaria parasites can cause deadly illness. Individuals who are heterozygous for sickle-cell anemia can produce a resistance to the malaria infection. This is known as
A. heterozygote disadvantage. B. heterozygote advantage. C. polygenic inheritance. D. pleiotropy. E. homozygote advantage.
The process by which the first cell of a new individual becomes a multicelled adult is called ____
a. homeostasis b. inheritance c. reproduction d. growth e. development
All of the following are predicted effects of continued global warming except:a
greater impact on plant species due to their inability to move about. b. thermal expansion of a warmer ocean. c. increased precipitation and flooding in mid-latitude continental interiors. d. increased frequency and intensity of storms. e. reproductive failure in some species, such as Adélie penguins