Chromosomes are aligned at the middle of the cell during _____

a. anaphase
b. metaphase
c. interphase
d. prophase
e. telophase


ANSWER: b

Biology & Microbiology

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Social behavior in which a penalty is imposed on the "recipient," while the "actor" also suffers a loss, is called ________

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The ________ zone is a range of environmental temperatures within which homeothermic metabolic rates are minimal

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Sensilla are sensory hairs involved in taste and smell

____________________ Indicate whether the statement is true or false.

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Many of the color varieties of summer squash are determined by several interacting loci: AA or Aa gives white, aaBB or aaBb gives yellow, and aabb produces green. Crosses among heterozygotes give a 12:3:1 ratio. What type of gene interaction would

account for these results? A) multiple alleles B) incomplete dominance C) conditional lethal D) epistasis E) complementation

Biology & Microbiology