Exam 11: Sexual Reproduction and Meiosis

Edouard van Beneden proposed that an egg and a sperm,each containing half the complement of chromosomes found in somatic cells,fuse to produce a single cell called a(n)________.

Which cells never divide by meiosis? (Check all that apply.)

In meiosis,sister kinetochores are attached to the same pole of the cell during meiosis I,and sister chromatid cohesion is released during anaphase II.What would be the likely result if sister kinetochores were attached to different poles of the cell during meiosis I and sister chromatid cohesion was released during anaphase I?

Which of the following statements about crossing over is false?

Non-disjunction is the failure of homologous chromosomes to separate during meiosis I,or the failure of sister chromatids to separate during meiosis II or mitosis.As a result,both homologous chromosomes or both sister chromatids migrate to the same pole of the cell.This produces daughter cells with an imbalance of chromosomes.A cell biologist examines the final products of meiosis in an earthworm (2n=36)and finds 2 cells with 20 chromosomes,and 2 cells with 16 chromosomes.Most likely this was because

You are studying meiosis in an organism where 2n = 24.How many chromosomes will each nucleus have after meiosis II is complete?

In life cycles that alternate between haploid and diploid stages,fertilization doubles the number of chromosomes per cell while ________ reduces it in half.

The synaptonemal complex is

Diploid organisms use meiosis to produce haploid cells.Meiosis consists of how many rounds of nuclear division?

If there were no suppression of DNA replication between meiotic divisions but cytokinesis proceeded normally,what is the most likely outcome of meiosis?

The point of connection between two sister chromatids,before anaphase II of meiosis separates them,is called the

What immediately follows meiosis I?

One of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.