Download Sexual Reproduction Worksheet

Sexual Reproduction Worksheet
1. Most human cells contain ______ chromosomes.
2. Most human cells (body/somatic cells) are said to be diploid. What does a diploid cell
mean? __________________________________________________________________
3. The sexual process that divides the nucleus and reduces the number of chromosomes by
half is called Meiosis. Meiosis is sexual reproduction; it produces ______ cells.
4. These offspring cells are haploid and are all genetically _______________.
5. What is meant by haploid? ______________________________________________
6. In sexual reproduction, the specialized reproductive cells are called ______________.
7. Are gametes haploid or diploid? __________________________________________
8. Human gametes contain ______ chromosomes each.
9. When two gametes unite, the resulting cell would have _____ chromosomes, and would
therefore be (diploid or haploid?) _______________.
10. The “union” of two gametes is called _________________________.
11. The sperm and the ovum both contain _________ the chromosomes of a normal cell.
12. When they meet, their nuclei fuse together (combine) so that the new cell contains the
_____________ number of chromosomes as a diploid cell.
13. The new cell that forms when a sperm and ovum unite is called a _____________.
14. The zygote will develop into very specialized cells. The process where cells become
specialized in development is called __________________________.
15. An embryo will then continue to grow and develop into a fetus by _____________
reproduction. (Think carefully!!!)