PSYC 100 Study Guide - Ovulation, Menarche, Trophoblast
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PSYC 100 Full Course Notes
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The 8-10 days after the sperm and egg unite, before the developing cells attach to the uterine wall. Sperm and ova are specialized type of reproductive cell called a gamete, and both are haploid (contain only one set of chromosomes / half the genetic complement required for life) The result of the merging male and female gametes is the zygote, which contains a full genetic load (half from each gamete), making is a diploid. The zygotic cell divides multiple times during the germinal period, through a process called cleavage (forming blastomeres) which begins 24 hours after conception, and creates a spherical mass of cells called a morula (solid mass of blastomeres) Identical twins are formed when the morula spits into two parts and each part fully develops into a fully formed infant they are identical because they share the same dna. Every cell in your body (except for gametes) has identical dna, however they all act differently .
