Get a copy of the Meiosis and Sexual Reproduction Outreach Notes. You will have 30 minutes of solo time to work on your outreach notes quietly by yourself.

You will now have 15 minutes to work with your shoulder partner to fill in any gaps you might have in your notes.

If you examined the nucleus of a cell of a pea plants, you would find that it had 14 chromosomes (7 pairs) One chromosome in each pair came from the male parent and the other from the female. A cell with two of each kind of chromosome is called a diploid or 2N

The two chromosomes of each pair in a diploid cell (2N) are called

Organisms produce gametes (you remember sperm or eggs) that contain one of each kind of chromosome. A cell containing one of each type of chromosome is called a haploid cell or N

Chromosome Number of Common Organisms Organism Body Cell (2N) Gamete (N) Fruit Fly 84 Garden Pea 147 Corn2010 Leopard Frog 2613 Human4623 Chimpanzee4824 Adders Fern

When cells divide by mitosis the new cells have exactly the same number and kind of chromosomes. For example, if mitosis was the only means of cell division, in fruit flies the first generation would have 8 chromosomes. 2 nd Generation 16 3 rd Generation 32 4 th Generation 64

Results in new combinations of alleles on a chromosome.

Which of these represents the number of chromosomes in cells before and after the process of meiosis? A.) n  n B.) n  2 n C.) 2 n  n D.) 2 n  2 n

Which of the following cells are the result of meiosis? A.) sperm cells B.) liver cells C.) bacteria D.) all the above E.) only B & C

Which of the following steps would not lead to genetic variation? A.) Crossing over of homologous chromosomes B.) Random alignment of the chromosomes during metaphase C.) The combination of genes from the sperm and egg D.) Alignment of chromosomes during prophase II

Crossing-over occurs during: A.) anaphase 1 B.) metaphase 1 C.) prophase 1 D.) prophase 2

Which of the chromosomes below are homologous? A. B. C. D. E.

A cell with a diploid number of 24 undergoes meiosis, how many chromosomes are in each daughter cell? A.) 6 B.) 12 C.) 24 D.) 48

The overall function of meiosis includes all of the following except _____? A.) gamete reproduction B.) growth of the cell C.) reduction of chromosome number from 2N to N D.) providing genetic variation to sexually reproducing organisms.

Which of these represents the number of chromosomes in cells before and after the process of meiosis? A.) n  n B.) n  2 n C.) 2 n  n D.) 2 n  2 n

Which of the following cells are the result of meiosis? A.) sperm cells B.) liver cells C.) bacteria D.) all the above E.) only B & C

Which of the following steps would not lead to genetic variation? A.) Crossing over of homologous chromosomes B.) Random alignment of the chromosomes during metaphase C.) The combination of genes from the sperm and egg D.) Alignment of chromosomes during prophase II

Crossing-over occurs during: A.) anaphase 1 B.) metaphase 1 C.) prophase 1 D.) prophase 2

Which of the chromosomes below are homologous? A. B. C. D. E.

A cell with a diploid number of 24 undergoes meiosis, how many chromosomes are in each daughter cell? A.) 6 B.) 12 C.) 24 D.) 48

The overall function of meiosis includes all of the following except _____? A.) gamete reproduction B.) growth of the cell C.) reduction of chromosome number from 2N to N D.) providing genetic variation to sexually reproducing organisms.