For a population to evolve through natural selection:
a) the mutation rate must be high.
b) individuals must be migrating in and out of the population.
c) it must be in a stable environment.
d) it must have a small population size.
e) its members must possess inheritable variation
Ans: e) its members must possess inheritable variation
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An invasive species is a species that ________.
A. spreads rapidly outside its native range and does not cause damage B. spreads rapidly outside its native range and causes damage C. spreads rapidly within its native range and causes damage D. spreads rapidly within, but not outside, its native range
_____ is performed to detect genetic disorders and birth defects in a fetus
a. Carrier testing b. Prenatal testing c. Genetic screening d. Gene therapy e. Enzyme replacement therapy
A regulatory substance binds an enzyme outside of the active site and changes its shape so that it enhances the enzyme's activity. What does this illustrate?
a. allosteric regulation b. feedback inhibition c. redox reaction d. enhancing activation energy e. an active site, bound by substrate
A certain organism has a mutation in the shelterin gene that makes it non-functional. Which of the follow consequence would you expect from this mutation?
a) Nucleosomes would not be formed so DNA can not be compacted as tightly. b) Epigenetic control would not be possible. c) The phosphodiester bonds between nucleotides would not be formed. d) DNA could not be repaired if it underwent damage. e) The telomere overhand region would become accidentally repaired, thus lengthening the chromosomes unintentionally.