Why does meiosis promote genetic variability?
A. Meiosis undergoes one cell division producing diploid cells.
B. Meiosis undergoes one cell division producing haploid cells.
C. Meiosis undergoes two cell division producing diploid cells.
D. Meiosis undergoes two cell division producing haploid cells.
Ans: D. Meiosis undergoes two cell division producing haploid cells.
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Humans cannot survive at sea by drinking salt water. However, marine vertebrates such as sea turtles and various sea birds can survive by drinking salt water. What do they have that humans do not?
A. Kidneys that are extremely good at producing a concentrated urine B. Body fluid concentrations that are similar to or greater than those of seawater C. The ability to secrete salts and wastes into their intestinal contents like an insect D. They use ammonia as their primary nitrogenous waste E. Salt glands
How is the net primary productivity of an ecosystem calculated?
What will be an ideal response?
Which of the following blood types are safe to transfuse to O blood types?
A. A B. B C. AB D. O E. All of these blood types are safe to transfuse to O blood types
The E. coli chromosome is circular and double-stranded DNA
Indicate whether the statement is true or false