Sturtevant provided genetic evidence for the existence of four pairs of chromosomes in Drosophila in which of these ways?
A) There are four major functional classes of genes in Drosophila.
B) Drosophila genes cluster into four distinct groups of linked genes.
C) The overall number of genes in Drosophila is a multiple of four.
D) Drosophila genes have, on average, four different alleles.
B
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Indicate whether the statement is true or false.
In summer, a(n) ____________________ prevents upper and lower waters from mixing. Fill in the blank(s) with the appropriate word(s)
The oil globules that result when a water and oil
mixture is shaken are due to a(n) __________ interaction. a. acidic b. basic c. hydrophilic d. hydrophobic e. ionic
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A) uterine tube. B) vagina. C) fimbriae. D) ovary. E) uterus.