At which of the following levels does bicoid work in fruit flies?
A) regulation of development of organs only in the thorax region of the organism
B) regulation of development of wings
C) regulation of development of organ systems
D) regulation of development of the head end, middle, and posterior end
Answer: D
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Environmental genomics is sometimes called metagenomics.
Answer the following statement true (T) or false (F)
Endosperm is found in:
A. angiosperms B. gymnosperms C. ferns D. mosses E. horsetails
Some microbes are not capable of growing on artificial media as pure cultures.
Answer the following statement true (T) or false (F)
Studies of human egg formation have shown that at ovulation the egg cell is stuck in metaphase II and
only completes meiosis if a sperm enters the egg. In metaphase II, chromosomes are tightly condensed, so you should expect to find ____ in human egg cells that have not been entered by sperm.
a. very high levels of gene expression b. mostly euchromatin c. very little gene expression d. no nucleosomes e. no solenoids