Which of these happens in telophase after the two sets of chromosomes have been separated?
A) The nuclear envelope breaks down.
B) The sister chromatids are pulled apart.
C) The spindle disassembles.
D) Chromosomes replicate.
E) The cytoplasm is divided.
C) The spindle disassembles.
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In seedcracker finches from Cameroon, small- and large-billed birds specialize in cracking soft and hard seeds, respectively. If long-term climatic change resulted in all seeds becoming hard, what type of selection would then operate on the finch
population? A) disruptive selection B) directional selection C) stabilizing selection D) No selection would operate because the population is in Hardy-Weinberg equilibrium.
What do lateral lines and semicircular canals have in common?
a. Both involve hair cells. b. Both are chemoreceptors. c. Both are associated primarily with the detection of sound waves. d. All of these are true.
________ can also be used to differentiate strains of microorganisms that differ in the antigenic composition of a structure or product.
Fill in the blank(s) with the appropriate word(s).
The only source of variety and diversity in sexually reproducing organisms is through mutations
Indicate whether the statement is true or false