Meiosis & Sexual Reproduction

Which of these occurs during meiosis?

• crossing over

• independent assortment

• random fertilization

• DNA replication

How many daughter cells are produced for each cell than enters meiosis?

• 1

• 2

• 3

• 4

What makes metaphase I of meiosis different than metaphase of mitosis?

• Chromosomes are divided into four groups instead of two.

• Crossing over occurs.

• Homologous pairs of chromosomes are assorted into daughter cells, not sister chromatids.

Which of these is an advantage of sexual reproduction?

• faster to complete

• genetic variation

• requires less energy

What is the purpose of meiosis?

• create cells with genetic diversity

• to repair missing cells

• the produce cells that are diploid, not haploid

• all of these answers are correct

Which of these human chromosomes is an autosome?

• chromosome 3

• chromosome 13

• the X chromosome

• chromosome 22

Which combination of chromosomes is the sex of a human female?

• XX

• XY

• YY

What is exchanged during crossing over?

• homologous parts of chromosomes

• portions of identical chromosomes

• random parts of different chromosomes

Which one of these describes nondisjunction?

• a chromosomal mutation

• when chromosome pairs go to the same daughter cell in meiosis.

• when a cell has three copies of a chromosome instead of two

• a phase in meiosis

Which of these is true of homologous chromosomes?

• they have a similar size and shape

• they are given the same number

• they have identical genetic information

• they are created by DNA replication