Psychology 2040A/B Lecture Notes - Quantitative Trait Locus, Y Chromosome, Semen Analysis
19 Nov 2013
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Conception interaction of heredity and environment father"s sperm + mother"s ovum = zygote. Each chromosome comes in pairs and contains genes: basic unit of heredity that builds a single protein. Zygote moves down fallopian tube and begins mitosis to become an individual with billions of cells. Steps: original parent cell splits, producing a duplicate, duplicate sets move to opposite ends of cell, which begins to divide, cell completes division, producing two daughter cells. Each gamete has half the chromosomes of its parent cell. Monozygotic: zygote divides to form genetically identical individuals. Dizygotic: two ova released simultaneously and fertilized by different sperm. Autosomes: the 22 pairs of human chromosomes identical in males and females. X chromosome longer than y chromosome females x and x. Sex of child determined by father"s sperm. Production of enzymes, amino acids and other proteins necessary in forming new cells and regulate timing of development. Guide cells to develop different parts of body.
