Which statement best explains why modern Europeans, Asians, or Africans lack Denisovan DNA in their genome?
A. Denisovans never interbred with any population of Homo sapiens.
B. Denisovans DNA was eliminated from those populations by strong purifying selection.
C. Denisovans interbred only with the population whose ancestors are Melanesians.
D. Neanderthal genes and Denisovan genes are incompatible, so modern populations have one or the other.
E. Denisovans are an offshoot of hominins that are unrelated to modern humans.
Ans: C. Denisovans interbred only with the population whose ancestors are Melanesians.
You might also like to view...
Damage to which of the following would prevent the production of the most hormones?
1.hypothalamus
2.thyroid gland
3.pancreas
4.adrenal glands
In the human systemic circuit, blood will pass through all but which of the following?
a. liver b. limbs c. lungs d. digestive organs e. brain
Which brain structure is incorrectly matched with its function?
a. thalamus?relays messages to cerebrum b. pons?regulates emotional response c. medulla?regulates coughing and sneezing d. cerebellum?regulates muscle coordination e. inferior colliculi?regulate auditory reflexes
Pain, especially intense sensations, is unpleasant and sometimes difficult for a person to cope with. Nevertheless, pain detection is essential for human survival. Explain how pain detection is necessary for a person's survival
What will be an ideal response?