Which of the following is not consistent with the theory of natural selection?
1.Individuals in a given population can vary in the specifics of shared traits.
2.Populations have an inherent ability to maintain a constant population size over time.
3.Resources become limited when a population expands.
4.Natural selection explains both the diversity of species and why there is variation within populations.
2
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Why is there a need to produce Okazaki fragments on the lagging strand, but not on the leading strand of DNA?
A. The two parental strands of DNA are antiparallel and DNA polymerase makes DNA in the 5? to 3? direction only. B. It is substantially more efficient to make several shorter strands rather than one longer strand of DNA. C. There is not enough cellular DNA ligase for bonding Okazaki fragments together if they were produced from both parental strands. D. By having one leading strand and one lagging strand the cell can limit the amount of DNA polymerase used for chromosomal replication. E. The leading strand opens first, and so Okazaki fragments are not needed. The lagging strand unwinds second resulting in the need to produce Okazaki fragments.
In ____, the parent separates into two or more offspring of approximately the same size
a. fission b. fertilization c. fragmentation d. budding e. parthenogenesis
What is the most commonly employed form of birth control in the United States?
A. sperm blockage with condoms B. prevention of ovulation by hormonal inhibition C. abstinence D. sterilization E. prevention of embryo implantation with IUD
Enzymes that keep a constant amount or concentration with varying concentrations of substrate is known as: