Organized by the centrioles, what structures are important in the movement of chromosomes during cell division?
A) chloroplasts
B) spindle fibers
C) mitochondria
D) cell walls
E) centromeres
B
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The accompanying figure details the possible outcomes in a scenario in which 10 zygotes are formed from a gene pool where the frequency of the allele A1 is 0.6, and A2 is 0.4. This graph is shown here
According to this graph, the probability that the frequency of A1 will increase to 0.7 in the next generation is about ________. A) 8%. B) 12% C) 16% D) 40% E) 70%
The area where the fresh water of a river meets the salt water of the ocean is a (n)
A. intertidal zone. B. continental shelf. C. hydrothermal vent. D. open ocean. E. estuary.
Why is urinalysis used for medical and drug testing? Give several examples of tests that can be performed through urinalysis
What will be an ideal response?
Both budding yeast and the bacteria E. coli are unicellular life. Which of the following statements explains why budding yeast can undergo sexual reproduction while E. coli cannot
(a) Unlike E. coli, budding yeast can alternate between a diploid state and a haploid state. (b) Unlike E. coli, budding yeast cannot multiply by undergoing cell division. (c) Unlike E. coli, haploid budding yeast cells can undergo meiosis to produce the gametes necessary for sexual reproduction. (d) E. coli DNA is unable to undergo homologous recombination, making it incapable of producing gametes.