The telencephalon region of the developing brain of a mammal _____
A) divides further into the metencephalon and myelencephalon
B) develops from the midbrain
C) is the brain region most like that of ancestral vertebrates
D) gives rise to the cerebrum
D
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What evidence supports the hypothesis that humans originated in Africa?
A) H. sapiens genomes contain some alleles from Neanderthal genomes. B) One Y chromosome lineage is that originated 1,000 years ago is found in 8% of modern day Asian men. C) Alleles of nuclear genes are less variable in African populations than in other populations. D) Mitochondrial DNA sequence variation is higher in African populations than in other populations.
Apple maggot flies appear to be two separate races. What makes these races different?
A) They look different. B) They eat different foods. C) They have different allele frequencies. D) They mate at different times.
Cells that contain only circular chromosomes are most probably which of the following?
a. Protist cells b. Fungal cells c. Bacterial cells d. Plant cells e. Animal cells
Which of the following best describes a polymerase?
a. It is an enzyme that blocks the formation of nucleic acids. b. It is an enzyme that slows the formation of DNA. c. It is an enzyme that catalyzes the formation of nucleic acids. d. It is a ribosome that catalyzes the formation of nucleic acids.