Match the following terms to their definitions a The develop

Match the following terms to their definitions: a. The developmental process during which the nervous system begins to develop just above the notochord b. Rapid succession of cell divisions without growth that produce a ball of cells from the zygote c. Cell contains 2 copies of each chromosome d. The exchange of segments of DNA from homologous chromosomes e. The developmental process that transforms the blastula f. Cell contains one copy of each chromosome g. The process in which homologous chromosomes (each composed of 2 chromatids) come together in pairs h. A structure consisting of 4 chromatids (2 homologous chromosomes) l. The creation of gametes List the 5 stages of animal development in order from earliest to latest. Match each term with its opposite:

Solution

Answers are as follows;

5. Haploid: ....f. Cell contains one copy of each cromosome

6. Diploid.......c. Cell contains 2 copies of each chromosome

7. Synapsis......g. The process in which the homologous chromosomes (each composed of two chromatids) come together in pairs.

8. Tetrad................h. A structure containing 4 chromatids (2 homologous chromosomes).

9. Gametogenesis......i. The creation of gametes.

10. Crossing over.......d. The exchange of segments of DNA from homologous chromosomes.

11. Cleavage..............b. Rapid succession of cell divisions without growth that produce a ball of cells from the zygote.

12. Gastrulation......e. The development process that transforms the blastula into three layered stage.

13. Neuralation: ......a. The development process during which the nervous system begins to develop just above the notochrod.