In plants, the gametes produced by a particular gametophyte are
a. always identical because they result from meiosis.
b. always identical because they result from mitosis.
c. sometimes identical because they result from meiosis.
d. sometimes identical because they result from mitosis.
e. never identical because they result from meiosis.
B
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In plants and animals, the zygote develops by which of the following processes?
A. mitosis B. meiosis C. syngamy D. synapsis E. reduction division
The chromosomes have arrived at opposite poles by the beginning of ____.
a. anaphase b. telophase c. prophase d. none of the above
Red-green color blindness is controlled by an X-linked gene in humans. The allele that causes color blindness is recessive to the allele for normal vision. A man and woman both with normal vision had color-blind fathers. If this man and woman have a child, what is the probability that the child will be color blind?
A) 1/2 B) 1/4 C) 1/8 D) 1/3 E) 0
The following pertain to ribosomes during protein synthesis except
A. ribosomes participate only in translation. B. they contain codons within their rRNA molecules. C. ribosomes use their large subunit to supply enzymes for peptide bonding. D. ribosomes shift toward the 3' end of the mRNA strand from one codon to the next. E. ribosomes bind to the 5' end of mRNA by their small subunit.