Meiosis and Pedigrees

In which phase does crossing-over happen?

• Prophase I

• Prophase II

• Metaphase I

• Anaphase II

What phase is this?

• Telophase I

• Prophase II

• Metaphase I

• Anaphase II

What phase is this?

• Metaphase I

• Prophase II

• Telophase I

• Anaphase II

What phase is this?

• Metaphase II

• Prophase I

• Telophase II

• Anaphase I

In humans, the haploid number of chromosomes is ____.

• 23

• 46

• 69

• 92

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

True or False? Before cells undergo meiosis they pass through interphase first.

• true

• false

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

• 2

• 3

• 4

• 8

The exchange of genetic information that insures that every gamete is unique is referred to as

• mitosis

• meiosis

• reduction division

• crossing over

1. Which process makes variation / genetic diversity possible?

• a. Mitosis

• b. Meiosis

• c. Both

• d. None