What do the fossil records tell us about hominins?
A) Hominins were a series of species, with one set of branches that eventually led to modern humans.
B) Hominins were related to chimpanzees but not to humans.
C) Hominins were a diverse group of human ancestors not related to other primates.
D) Hominins were a diverse group of primate species with modern humans as the only surviving group.
D
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Y-linked traits are sometimes passed from fathers to daughters following recombination between the sex chromosomes
A. true B. false
The feeding chambers inside the sponge are lined with specialized cells that generate a directed water current through the sponge and trap and ingest microscopic food particles. What are these cells called?
a. amoebocytes b. sclerocytes c. choanocytes d. pinacocytes
Which natural factors affect changes in genetic variation?
What will be an ideal response?
Which of the following are true statements regarding the volume of tissue nitrogen excreted during the N2 washout test for measuring functional residual capacity (FRC)
1. It is not a factor. 2. It varies with the length of the test. 3. It varies with the weight of the patient. 4. It cannot be correct. Select one: a. 1 only b. 2 and 3 only c. 2, 3, and 4 only d. 4 only