DNA and RNA are alike in
a. the pentose sugar.
b. all the nitrogenous bases used to assemble the genetic code.
c. the number of strands.
d. their function in genetics.
e. none of these.
E
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Which variety of plant has a noticeable sporophyte?
a. hornwort b. liverwort c. bryophyte d. horsetail
Why is it essential that meiosis produce haploid cells?
A. so that the number of chromosomes will double each generation B. to produce haploid offspring C. to prevent the number of chromosomes from doubling each generation D. to produce diploid gametes E. to allow asexual reproduction
Proteins that are produced in a disease tissue and can act as a means of tracking a disease's progression (such as PSA in prostate cancer) is known as ________
A) an embryonic marker B) an STR C) a microarray D) a biomarker E) a tag
If the base in a DNA strand is changed from cytosine to adenine, the base pair in mRNA is
A. uracil. B. cytosine. C. thymine. D. guanine.