Which of the following is unique to meiosis?
nuclear membrane breaks down
DNA organizes into chromosomes
crossing-over
chromosomes align along the central plate of the cell
None of the choices are correct.
crossing-over
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______ exerts its effects primarily upon the reproductive organs.
Fill in the blank(s) with the appropriate word(s).
Match the term with its definition.A. The part of the brain involved in actual declarative memoryB. The largest of the cerebral commissuresC. A factor than activates gene transcription for formation of dendritic spinesD. A series of neurons involved in long-term memoryE. A part of the temporal lobe involved in adding emotional overtones to a memoryCorpus callosum
Fill in the blank(s) with the appropriate word(s).
An autorhythmic cell membrane's slow drift to threshold is called the __________ potential
Fill in the blank(s) with correct word
The cell that directly results from the fusion of a secondary oocyte and a single sperm is called a(n)
A) ootid. B) gastrula. C) blastula. D) morula. E) zygote.