Sugars and phosphates are held together in a DNA molecule by a(n) ____________________ bond Fill in the blank(s) with the appropriate word(s)
covalent
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Hamilton's Rule is a calculation of the strength in a population of
A. sexual selection. B. kin selection. C. natural selection. D. genetic relatedness. E. group selection.
A portion of a microarray is shown above in which the expression of genes on human chromosome 21 was examined in
normal brain cells (cDNAs labeled with a white fluor) or brain cells from an individual with a neurological disorder (cDNAs labeled with a black fluor). Which genes are over-expressed in the abnormal cells compared to the normal cells?
a. A2, B1, B3, and C4 b. B2 and C1 c. A1, A3, A4, B4, C2, and C3 d. A1, A2, B2, and C1 e. A2, C2, and C4
The mimicry of coral snakes by scarlet king snakes is an example of Batesian mimicry.
Answer the following statement true (T) or false (F)
In Tetrahymena, Group I introns are found in genes for
a. rRNAs. b. histones. c. tRNAs. d. ribosomal proteins. e. snRNAs.