Meiosis

In humans, the haploid number of chromosomes is ____.

• 23

• 46

• 69

• 92

Tags

NGSS.HS-LS3-1

Which of the following is the best definition for MEIOSIS?

• the process of two haploid cells uniting

• the counting of chromosomes within a diploid cell

• a two-step process that reduces the number of chromosomes in half such that there is only one copy of all the chromosomes

• the equational division of a cell into two identical copies

In which stage of MEIOSIS does crossing over occur? (The exchange of genetic material between chromosomes in a tetrad.)

• Anaphase I

• Metaphase I

• Prophase I

• Telophase I

How many cells are formed at the end of Meiosis II?

• 2

• 3

• 4

• 8

Which of the following are CORRECT observations about the differences between MITOSIS and MEIOSIS? (Check all that apply.)

• Mitosis produces cells that identical to the parent cell.

• Meiosis produces cells that have half the number of chromosomes as the parent cell.

• All cells go through INTERPHASE as part of the cell cycle, whether it goes to mitosis or meiosis next.

• In both types of cell division, the chromosomes are only duplicated once.

• Only in Mitosis, do you see chromosomes pair up to form a tetrad.

Tags

NGSS.HS-LS1-4

The products of MEIOSIS have _______ number of chromosomes.

• haploid

• diploid

Tags

NGSS.HS-LS3-2

Name this phase of Meiosis:

• Prophase II

• Metaphase I

• Metaphase II

• Anaphase II

how many chromosomes do human gametes (sex cells) have?

• 46

• 23

• 18

• 36

Crossing over usually occurs between:

• Sister Chromatids

• Homologous Chromosomes

• Alleles

• Non-Homologous Chromosomes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This image shows chromosomes during Prophase 1. Which of the following correctly describes the process shown?

• segregation of sister chromatids
• condensation and segregation of alleles
• mutationin which the DNA content of the gene is altered
• crossing - over in which alleles are exchanged