Chromosomes are aligned at the middle of the cell during _____
a. anaphase
b. metaphase
c. interphase
d. prophase
e. telophase
ANSWER: b
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Social behavior in which a penalty is imposed on the "recipient," while the "actor" also suffers a loss, is called ________
Fill in the blank(s) with correct word
The ________ zone is a range of environmental temperatures within which homeothermic metabolic rates are minimal
Fill in the blank(s) with correct word
Sensilla are sensory hairs involved in taste and smell
____________________ Indicate whether the statement is true or false.
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