PSYC 100 Chapter 14: Week 14

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Tyson Baker

Document Summary

Germinal period: the first two weeks after the sperm and egg unite. lasts until the developing cells have attached to the uterine wall, about 8-10 days after conception. Gamete: a mature male or female cell used for reproduction and they are. Haploid: having one set of chromosomes instead of the usual complement of two. Zygote: a single new cell formed at conception and is the result of the merging of male and female gametes, it is now diploid: containing both sets of chromosomes. Cleavage: is the process during the germinal period begins roughly 24 hours after conception, when the zygotic cell divides multiple times, creating numerous identical copies that hold together in a spherical shape. Morula: is the resulting spherical mass of cells after a few instances of cleavage. Epigenetic modification: the reason for these differences is a process called epigenetic modification although dna is the same in each cell of the body.