The stage of human development that occurs from implantation to about 8 weeks after fertilization is the
A. zygote.
B. morula.
C. gastrula.
D. fetal stage.
E. embryonic stage.
E. embryonic stage.
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The biggest difference between CNV and VNTRs is the size of the DNA being studied
A. true B. false
A pictogram is used to
A) compare which DNA base is present at a particular position in a conserved short DNA sequence among different species. B) compare the frequency of two-base sequences in the genomes of species thought to be closely related based on other types of evidence. C) visualize what the chromosomes of different species look like when condensed. D) align long sections of the genomes of different species that are the same in sequence.
What is the leading scientific hypothesis explaining how the endomembrane system of eukaryotic cells originated?
A. From the inward folding of the plasma membrane B. From engulfing eukaryotic cells C. From engulfing prokaryotic cells D. From the spontaneous formation of phospholipids
How large is a nuclear pore in the nuclear envelope?
A. larger than the endoplasmic reticulum B. larger than a ribosome C. smaller than a protein D. smaller than a ribosome E. larger than the Golgi apparatus