A chicken somatic cell carries 78 chromosomes. A chicken sperm cell will contain how many chromosomes?
a. 19
b. 39
c. 78
d. 156
e. 312
ANSWER: b
You might also like to view...
Boiling DNA can produce ____
a. salicylic acid b. auxins c. cytokinins d. abscisic acid e. jasmonates
Because of fluctuations in the environment, such as depletion of food supply or an outbreak of disease,
a population may periodically experience a rapid and marked decrease in number of individuals, leading to a form of genetic drift called
a. a founders effect. b. migration. c. gene flow. d. natural selection. e. a genetic bottleneck.
An inanimate object that harbors and transmits a pathogen is a ________.
A. vector B. source C. fomite D. reservoir E. carrier
Comparing reabsorption and secretion in the nephron, which of the following statements is TRUE?
A. secretion occurs when materials in the lumen of the tubules reenter the blood B. secretion occurs when materials leave the blood at the glomerulus C. reabsorption occurs when materials from the blood reenter the tubules D. reabsorption occurs when materials in the tubules renter the blood vessels. E. reabsorption occurs when materials in the interstitial spaces around the tubules enters the lumen of the tubules.