In the figure above, this group of plants was given treatment IV
a. 1
b. 2
c. 3
d. 4
e. 5
D
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The major way that meiosis II differs from mitosis is that
A. in meiosis II, the homologous sister chromatids align at the metaphase plate as a tetrad. B. in meiosis II, a pair of sister chromatids move to the pole. C. in meiosis II, the cells are haploid. D. in meiosis II, a synaptonemal complex is formed. E. in meiosis II, the homologues separate.
ws+; ws+; ws; ws; ws+; ws+; ws; ws
In Neurospora, the white-spore allele (ws) results in white spores rather than the wild-type black spores. Diploid ws / ws+ cells undergo meiosis followed by one round of mitosis to form ordered tetrads. Indicate if the pattern of spores seen in the tetrads are consistent with first-division or second-division segregation. A) first-division segregation pattern B) second-division segregation pattern
The two leaflike organs which may flank the base of the petiole where it joins the stem are called
A. blades. B. palisades. C. Casparian strips. D. stipules. E. pericycles.
Mutations that arise in nature, from no particular artificial agent, are called ________
A) chromosomal losses B) induced mutations C) nutritional mutations D) spontaneous mutations E) cosmic mutations