During S phase, ________ occurs
Fill in the blank(s) with the appropriate word(s).
DNA replication
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Among humans, sexual maturity occurs _______________
a. after puberty b. at adulthood c. when the sexual organs start to develop d. when the sex hormones are produced
Atomic isotopes
a. are electrically unbalanced. b. behave the same chemically and physically but differ biologically from other isotopes. c. are the same physically and biologically but differ from other isotopes chemically. d. have varying numbers of neutrons. e. are produced when substances are exposed to radiation
There are three alleles controlling the blood types ABO. I A and I B are codominant genes, so that the
combination I A I B produces the blood type AB. The third allele I O is recessive to the other two alleles. Indicate which of these parents could produce the given child:Parents Child Yes or No (a) A ? AB B (b) A ? O A (c) A ? B O (d) A ? AB O (e) A ? AB B (f) B ? B O (g) AB ? AB A What will be an ideal response?
Each of the following affect cell walls, except ________.
A. cephalosporin B. penicillin C. cycloserine D. vancomycin E. erythromycin