Genomic studies of Neanderthals, modern humans, and chimpanzees have confirmed that ____
a. humans evolved from Denisovans
b. humans and Neanderthals interbred
c. humans and Neanderthals are 98.8% genetically identical
d. humans are direct descendants of Neanderthals
e. there is a 5% difference in the coding regions of the human genome vs. the chimpanzee genome
b
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The Black Plague has killed millions of humans over the course of history, yet we do not vaccinate against this disease. Why is this and how is the disease controlled in modern human populations?
What will be an ideal response?
Biological digestion is defined as
a. taking food into a digestive chamber. b. breaking food down into smaller pieces that can be absorbed into cells. c. moving nutrient molecules into the internal environment. d. expelling indigestible materials. e. all of these.
Which of the following are the areas where chromatids intertwine during meiosis?
A) nondisjunction B) synapsis C) chiasma D) tetrad E) bivalent