CHYS 2P35 Lecture Notes - Lecture 4: Functional Analysis, Zygosity, Hypervigilance

• School: Brock University
• Department: Child and Youth Studies
• Course: CHYS 2P35
• Professor: John Mc Namara

Document Summary

Father"s sperm + mother"s ovum = zygote with 46 chromosomes in total. The process by which a cell separates chromosomes in its nucleus into two identical cells. Made up of dna: the chemical code for development. Chromosomes within sperm cells divide in half before they fertilize an ovum or egg cell. Chromosomes with egg cells divide in half before they are fertilized. The randomness creates variation in the resulting embryo. Direct production of amino acids necessary for forming new cells. Guide cells to develop different parts of body. May turn on or turn off other genes. Simple dominant recessive inheritance some alleles are stronger than others: dominant alleles, recessive alleles. To express a trait one must have a homozygous recessive allele. One gene is dominant and one is recessive. Dominant genes are almost always stronger than recessive genes. Limited information on ethnic differences, but differences may exist. Persistent fear in response to object or situation.