Compare mitosis and meiosis. Which statement is accurate?
a. Meiosis I is more like mitosis than is meiosis II.
b. Both processes result in four cells.
c. Synapsis (pairing of chromosomes) occurs in both.
d. Chromatids are present only in mitosis.
e. Meiosis II resembles mitosis.
e
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Blanks "A" and "B" should be labeled
respectively a. does not drink; loss b. does not drink; gain c. drinks; loss d. drinks; gain e. none of these
A zygote
A. is haploid. B. contains all of the genes from each parent. C. is formed by meiosis. D. is genetically different from either parent.
A(n) ________ is a diagram in which blocks represent each trophic level
Fill in the blank(s) with correct word
Assume that you are told that a particular organism, Drosophila, has the XO chromosome complement. You are also told that the autosomal complement is a normal 2n. You know that in humans the XO complement is female determining. Would you be correct in
assuming that the Drosophila sex for XO is also female? Choose the answer that includes the correct explanation. A) Yes, the presence of an X chromosome determines a female in both organisms. B) Yes, because sex determination in humans and insects is essentially the same. C) No, the chromosomal basis for sex determination in Drosophila is based on the balance between the number of X chromosomes and haploid sets of autosomes. D) No, it takes two X chromosomes to produce a female in humans and a Y chromosome to produce a male in Drosophila. E) No, sex determination in Drosophila is dependent on the presence or absence of the Y chromosome.