A Barr body in a mammalian female cell represents:a
an inactivated oocyte.
b. a polar body.
c. a degenerate nucleus.
d. an inactivated X chromosome.
e. an inactivated Y chromosome.
D
Biology & Microbiology
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Do both males and females appear to be equally affected?
a. Yes b. No
Biology & Microbiology
The ratio of net productivity at one trophic level to net productivity at the trophic level below it is known as:
1.Ecological efficiency 2.Harvesting efficiency 3.Assimilation efficiency 4.Production efficiency
Biology & Microbiology
The collective human ecological footprint is now much larger than Earth's sustainable resource base
Indicate whether the statement is true or false
Biology & Microbiology
Worms with a well-developed circulatory system (including five pairs of hearts) are
A) echinoderms. B) eels. C) nematodes. D) annelids. E) platyhelminths.
Biology & Microbiology