The shape of the bill on the bird in the accompanying figure is most likely the result of:
a. coevolution.
b. pollination.
c. asexual reproduction.
d. pseudocopulation.
e. inbreeding.
a
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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
Glycolysis
a. occurs in the mitochondria. b. happens to glucose only. c. results in the production of pyruvate. d. occurs in the cytoplasm. e. results in the production of pyruvate and occurs in the cytoplasm.
In the 1990s, researchers attempted to improve the balance of amino acids in soybean protein by inserting a gene from Brazil nuts. Which of the following is the best reason as to why the transgenic soybeans have never been grown commercially?
A) The public was misinformed by food-safety advocates and refused to buy products made from the modified soybeans. B) The modified soybeans could not grow with the foreign gene present. C) Regulatory hurdles made the modified soybeans too expensive to market profitably. D) Some people were allergic to the protein product of the Brazil nut gene.
autosomes
What will be an ideal response?