Triticale is an allopolyploid hybrid between wheat and rye. Some strains of Triticale show agricultural promise because (Select all that apply.)
A) they combine the high yields of wheat with the ability adapt to unfavorable environments like rye.
B) the grain is high in protein, especially the amino acid lysine.
C) they combine desirable traits from wheat and rye in one crop plant.
D) they are sterile because the wheat and rye chromosomes cannot pair during meiosis.
A) they combine the high yields of wheat with the ability adapt to
unfavorable environments like rye.
B) the grain is high in protein, especially the amino acid lysine.
C) they combine desirable traits from wheat and rye in one crop plant.
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A virus that kills its host is said to be
A) lytic or virulent. B) temperate. C) lysogenic. D) virulent or lysogenic, but not temperate.
Some Drosophila reject the sperm of another species, which is known as
a. gametic isolation. b. hybrid breakdown. c. hybrid inviability. d. mechanical isolation. e. temporal isolation.
The accompanying figure represents a:
a. fairly simple food web.
b. fairly simple food chain.
c. pyramid of biomass.
d. pyramid of energy.
e. pyramid of numbers.
Which of the following glands is located nearest the kidneys?
A) ovaries B) pineal gland C) thyroid gland D) adrenal glands