1. SEXUAL REPRODUCTION Quiz 6B

2. sexual reproduction the joining of haploid gametes to form a diploid zygote, which develops into a new individual each offspring receives genes from both its parents get genetic variety

3. Information about genes most organisms have 2 genes for every trait

4. Information about genes genes are parts of chromosomes

5. Information about genes most genes come in pairs

6. Information about genes most chromosomes come in pairs

7. Diploid having 1 pair of each type of chromosome in an organism have 2 of every kind of chromosome symbol is 2n

9. Haploid a cell that has only 1 chromosome of every pair symbol is 1n

10. Diploid vs Haploid

11. Normal human cells have 23 pairs of chromosomes which is a total of 46 chromosomes. Human diploid number is 46 Human haploid number is 23

12. Diploid & Haploid Examples HaploidDiploid Honey bee1632 Crayfish100200 Rabbit2244 Watermelon1122 Corn1020

13. Meiosis the process whereby 1 diploid cell forms haploid cells (gametes) a dividing process during which the # of chromosomes is cut by 1/2 in each resulting cell also called reduction division

14. Meiosis

15. Gamete a cell that contains only 1 of each type of chromosome found in an organism a reproductive cell in order to form a haploid cell (gamete)- meiosis occurs in most organisms meiosis produces 1 of 2 types of gametes

16. 2 types of gametes Ova (singular-ovum) - female gametes; usually larger than the male gamete and does not have that power to move itself Sperm - male gametes; usually smaller than ova, but they have some means of moving themselves

17. 2 types of gametes sperm ovum

18. Spermatogenesis

19. Oogenesis

20. Where are gametes formed? Testes – male reproductive organs Ovaries – female reproductive organs In reproductive organs

22. Fertilization the formation of a zygote from the union of 2 gametes

23. Zygote a diploid cell formed by the union of 2 gametes