What is the primary source for new, unique genes in a population?
A) mutation
B) natural selection
C) artificial selection
D) crossing over
A
Biology & Microbiology
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Which are important factors that affect population sizes?
a. Generation timing b. Immigration of organisms c. All of these choices d. Mortality rate
Biology & Microbiology
Heterochromatin does not exist in interphase nuclei
a. true b. false
Biology & Microbiology
________ are used for cutting DNA molecules into fragments
A) Antisense RNAs B) Mutagens C) DNA polymerase and DNA ligase D) Restriction enzymes E) RNA polymerases
Biology & Microbiology
Chronic granulomatous disease is a disorder of the (first/second/third) line of immune defense
What will be an ideal response?
Biology & Microbiology