Free Printable Meiosis #1

Worksheets

Meiosis #1

Total questions: 10

Worksheet time: 50mins

Name

Class

Date

Why do we need meiosis?

To double the number of chromosomes going into sex cells

To halve the number of chromosomes going into sex cells

To triple the number of chromosomes going into sex cells

To not change the number of chromosomes going into sex cells

In MITOSIS cells are genetically _______, but in MEIOSIS cells are genetically ______.

diferent, identical

identical, different

different, different

identical, identical

Structure (b) is pointing to a

chromatid

chromosome

centromere

DNA

Structure (a) refers to the _____.

sister chromosomes

sister chromatids

centromere

centriole

When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs.

crossing over

mutagenesis

hybridization

fertilization

According to the chromosome theory of inheritance, what are carried from parents to their offspring on chromosomes?

Genes

Spindle Fibers

Centrioles

Cytoplasm

Diploid cells are represented by....

½n

Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.

23, 46

46, 23

2, 4

50, 100

During which phase of meiosis does crossing over occur?

Prophase I

Metaphase I

Prophase II

Metaphase II

During any stage of meiosis

10.

During Metaphase I, how do the chromosomes line up on spindle?

One homologous chromosome per spindle fiber

Two homologous chromosomes per spindle fiber

One random chromosome per spindle fiber

Two random chromosomes per spindle fiber

Reset

Meiosis #1

Total questions: 10

Worksheet time: 50mins

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