5.5 Meiosis Bellringer

The diagram above shows the process of meiosis. The segregation that occurs during meiosis results in a -

• decrease in the number of cells per organism

• reduction in the number of chromosomes per cell

• single fertilized egg cell

• group of genetically identical cells

Sexual reproduction in plants depends on sex cells being produced by the process of -

• osmosis

• fermentation

• transpiration

• meiosis

Meiotic cell division in animals is directly responsible for the -

• formation of gametes

• growth of a cell

• fertilization of an egg

• production of muscle cells

Meiosis results in greater genetic variation than asexual reproduction because it -

• is a lengthy process full of errors

• results in a greater number of offspring

• is more common in higher order species

• allows the recombination of genetic information

The jimsonweed Datura stramonium, normally has 12 chromosomes in the body cells. How many chromosomes will an egg cell of the weed have?

• 6 chromosomes

• 12 chromosomes

• 18 chromosomes

• 24 chromosomes

Which is the result of normal meiosis and fertilization in humans?

• multiple alleles

• a chromosome number of 92

• new gene combinations

• a polyploid condition

Crossing-over most commonly results in -

• new species

• new combination of genes

• new populations

• new numbers of chromosomes