The formation of the bivalent during meiosis

A. contributes to the genetic diversity of a species.
B. ensures that the resulting haploid cells will have the same combination of homologous chromosomes as the original diploid cell.
C. occurs during meiosis I and meiosis II.
D. aids the alignment of sister chromatids in a single row along the metaphase plate.
E. is required for the pairing of homologous chromosomes.


Answer: A

Biology & Microbiology

You might also like to view...

At the venous end of a capillary, the blood pressure is ____ the osmotic pressure and fluid ____ the blood vessel

A. lower than; moves into B. higher than; moves into C. lower than; moves out of D. higher than; moves out of E. equal to; remains within

Biology & Microbiology

A significant polymorphic inversion on chromosome 17, the MAPT inversion, is identified by marker SNPs that can now be used to screen large numbers in a population. The inverted region is large and extends for approximately 900 kb

The two haplotypes (one inverted and one not) are each associated with increased risk of a number of neurological conditions. How can the inverted region be used to find the most recent common ancestor of the inversion? A) by typing SNPs from humans and from other primates B) by assessing SNPs from a large number of human populations C) by looking for heterozygotes for the two kinds of chromosome 17 D) by fertility studies on populations with each of the haplotypes E) by using a BAC clone library to identify the ends of the inversion

Biology & Microbiology

Raising the K+ level in the extracellular fluid to 150 mmol/l would have what effect on the action potential?

a. The neuron would not depolarize. b. The neuron would hyperpolarize (become more negative than normal). c. The neuron would not repolarize after the depolarization. d. There would be no effect on the action potential.

Biology & Microbiology

Actinomycetes produce many of the antibiotics we use in medicine.

Answer the following statement true (T) or false (F)

Biology & Microbiology