In meiosis I cytokinesis usually occurs after telophase I and produces
A. one diploid cell with sister chromatids still attached.
B. two haploid cells with sister chromatids still attached.
C. four haploid cells.
D. two diploid cells. E. one haploid cell.
B. two haploid cells with sister chromatids still attached.
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Independent assortment means that the ____
a. phenotypes are often a blending of two independent genotypes b. segregation of one gene pair depends on the segregation of another gene pair c. gametes produced must be heterozygous in all cases d. segregation of one gene pair occurs as if no other gene pair was present e. phenotypic ratio in F2 will be the same for dihybrid and monohybrid crosses
What is the current situation regarding the
wheat stem rust fungus?
a. it has been eradicated b. it has wiped out most of the wheat around the world c. resistant wheat strains have made the fungus mostly ineffectual d. a new strain of wheat stem rust has emerged that is infecting resistant varieties of wheat e. it is only a problem in the United States
Freshwater is most likely to be polluted
A) by oil spills in ocean water moving inland. B) as a result of eutrophication. C) by contaminants from aquifers moving to surface waters. D) from organic solvents and farming chemicals in surface water runoff. E) by radioactive waste seeping from nuclear reactors.
You've discovered a new species of sea spider! You've based your discovery on the spider's appearance, but you need to use molecular data to discern how it is evolutionarily related to other described species. Which of the following approaches might be useful for comparing you new species with those species already described?
What will be an ideal response?