Which of the following is a benefit of recombination during meiosis in eukaryotes?
A. Branched intermediates aid in segregation by keeping the homologous chromosomes together.
B. Crossing over can result from recombination, decreasing the combinations of alleles in each meiotic product.
C. Recombination introduces mutations that lead to increased variation in the population.
D. Recombination does not occur during meiosis.
E. None of the choices given is correct.
A
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Which is an example of acquisition of natural passive immunity?
A) a fetus protected from disease by its mother's antibodies B) a person who received his or her yearly influenza vaccine C) a person who acquired the chickenpox D) a person who received tetanus antiserum after stepping on a rusty nail
Carotenoids are composed of isoprene subunits
________________Indicate whether the statement is true or false.
The physical appearance of an organism for a given trait is known as:
a. genetics. b. dominance. c. synapsis. d. genotype. e. phenotype.
junction between cells formed by the joining of two adjacent plasma membranes; it lends strength and allows ions, sugars, and small molecules to pass between cells.
What will be an ideal response?