A(n) ________ in a chromosome is often lethal and occurs when a part of chromosome breaks off or is lost
Fill in the blank(s) with correct word
deletion
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The figure below shows what happens in insect populations when crops are sprayed with insecticides. This is an example of ________.
A) natural selection B) genetic drift C) founder effect D) gene flow
In mice, the allele for colored fur (C) is dominant to the allele for albinism (c). The allele (W) for
normal behavior is dominant to that for waltzing movement (w). Give the probable genotypes of the parents if they produced the offspring listed after the following crosses: (a) Colored normal ? white waltzer produced 10 colored normal, 8 colored waltzers, 2 white waltzers, and 11 white normal. (b) Colored normal ? white normal produced 35 colored normal and 13 colored waltzers. (c) Colored normal ? colored normal produced 37 colored normal, 14 colored waltzers, 9 white normal, and 5 white waltzers. What will be an ideal response?
Select all mechanisms by which glucocorticoids raise the blood glucose level.
A. production of glycogen B. metabolism of fatty acids C. conversion of amino acids to glucose
The ascending limb of the loop of Henle
A. removes solutes from the filtrate. B. is permeable to sodium ions. C. is not permeable to water. D. produces hypoosmotic filtrate. E. has all of these properties.