According to the genomic analysis of Mycoplasma genitalium, what is the number of essential genes?
A) 48,000
B) 480
C) 265 to 350
D) 3
C) 265 to 350
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The "charging" or activation of a tRNA molecule includes:
A. the covalent attachment of an amino acid to the 3'-terminal cytosine of the tRNA. B. the covalent attachment of the amino group of an amino acid to the tRNA. C. the covalent attachment of the carboxyl group of an amino acid to the tRNA. D. the covalent attachment of an amino acid to the 5'-terminal adenosine of the tRNA.
Which of the following NOT a protection from
most mutations?
a. very few bases actually change b. the genetic code is redundant c. most of our DNA is non-coding d. genes contain non-coding regions e. all of these protect us from mutations
Karyotype analysis
a. is a means of detecting and reducing mutagenic agents. b. is a surgical technique that separates chromosomes that have failed to segregate properly during meiosis II. c. can be used in prenatal diagnosis to detect chromosomal mutations and genetic disorders in embryos. d. replaces defective alleles with normal ones. e. is used in DNA analysis for paternity.
The function of the umbilical cord is to ___________________
Fill in the blank(s) with the appropriate word(s)