What process can lead to an individual having too many or two few chromosomes?

A. Nondisjunction
B. Homologous recombination
C. Crossing over
D. Independent assortment


Answer: A

Biology & Microbiology

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The shaded group includes all of the species that were derived from one common ancestor, this group could also be called a(n)



A. polyphyletic taxon.
B. paraphyletic taxon.
C. phylum.
D. homology.
E. clade.

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The type of inflammation of the gum in which bacteria grow in pockets between the gums and the teeth and in which teeth may become loose is called ________

Fill in the blank(s) with correct word

Biology & Microbiology

Variation that does not alter the ability of an individual to survive and reproduce is therefore considered:a

neutral b. genetic c. geographic d. heterozygous e. frequency-dependent

Biology & Microbiology

Staphylococcus aureus is a halotolerant bacteria.

A) True B) False

Biology & Microbiology