Which organ system is the first of those listed to begin development in the human embryo?

a. nervous system
b. excretory system
c. reproductive system
d. skeletal system
e. endocrine system


a

Biology & Microbiology

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In large genomes, most reciprocal translocations occur in

A. coding DNA. B. noncoding DNA. C. open reading frames. D. closed reading frames. E. inversion regions.

Biology & Microbiology

Somatic cell nuclear transfer (SCNT) is a reproductive cloning method in which _____

a. the DNA from a blastocyst is inserted into a donor egg b. donor DNA is inserted into an unfertilized egg whose nucleus had been removed c. an unfertilized egg is inserted into a donor uterus d. an embryo is split during early development e. the cell contents from a donor is inserted into a donor egg

Biology & Microbiology

There will be approximately __________ mice in

four months in a population of 1,000 mice where 500 mice are born and 400 mice die monthly. a. 1,060 b. 1,160 c. 1,260 d. 1,360 e. 1,460

Biology & Microbiology

The same DNA probe used to measure mRNA levels by northern blotting can also be used on a Southern blot with a restriction digest of genomic DNA

What new information can be gained from Southern blotting (that wasn't already obtained by the northern blot analysis)? A) the level of protein that is being translated from the mRNA transcript B) the presence of a unique restriction fragment pattern indicating a mutation in a known restriction site C) the size of the genomic DNA fragments, including both introns and exons D) the size of the genomic DNA fragments and the level of protein being translated E) the size of the genomic DNA fragments and the presence of a unique restriction fragment pattern indicating a mutation in a known restriction site (both B and C)

Biology & Microbiology