Which of the following would change the allele frequencies of a population?
A. Tall people in a population preferentially marry other tall people.
B. A population on an island remains isolated and no one leaves or moves onto the island.
C. Lack of mutation in the DNA
D. All of the answer choices would change allele frequencies of a population.
Answer: A
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Proteins produced by certain white blood cells may actually slow the production and maturation of other immune cells, thereby acting as regulators of the immune response. These are known as
a. cytokinins. b. complement. c. interferons. d. interleukins. e. MHC
Which go these observations gives the most support to the endosymbiotic theory for the origin of eukaryotic cells?
a. the existence of structural and molecular differences between the plasma membranes of prokaryotic and the internal membranes of mitochondria and chloroplasts b. the similarity in size between the cytosolic ribosomes of prokaryotes and the ribosomes within mitochondria and chloroplasts c. the size disparity between most prokaryotic cells and most eukaryotic cells d. the observation that some eukaryotic cells lack mitochondria
Which of the following classes of microbes have their respiratory enzyme, if present, located in the cytoplasmic membrane?
A. The prokaryotes B. The eukaryotes C. Both, the eukaryotes and prokaryotes D. Neither, the eukaryotes and prokaryotes
As proof of a functional synthetic genome the JCVI conducted ________ to demonstrate that JCVI-syn1.0 was a functional genome
A) homologous recombination B) whole genome sequencing C) gene editing D) genome transplantation