Consider an animal that is a tetraploid. Following meiosis, how many copies of each homologous chromo-some will be found in the gametes?

What will be an ideal response?


ANS:
two

Biology & Microbiology

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Genetic drift can eliminate alleles from a population more quickly than natural selection

Indicate whether the statement is true or false.

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In eukaryotic cells, which occurs during

mitosis? a. the duplication of chromatids b. the replication of DNA c. synapsis and crossing over d. fragmentation and disappearance of nuclear envelope e. all of these

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Heterotrophic eukaryotes that digest their food externally and absorb the small molecules are referred to as

A) bacteria. B) fungi. C) plants. D) multicellular algae.

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Animal research has revealed a general reward system related to the release of the neurotransmitter

A) acetylcholine. B) GABA. C) dopamine. D) epinephrine.

Biology & Microbiology