FRHD 1010 Chapter Notes - Chapter 3: Prenatal Development, International Hapmap Project, Zygote
16 Aug 2016
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Document Summary
Phenotype is the observable characteristics of a person, including appearance, personality, intelligence and all all other traits. The genome is a full set of genes that are the instructions to make an individual member of a certain species. A project called the hapmap aims to spot all the variations in the human genome, of 11 million differences each individual is unique. The 23rd pair: the material surrounding a gene can halt or expand the instructions. Xx is a 23rd chromosome pair that consists of 2 x-shaped chromosomes, one each from the mother and the father, xx zygotes become female. Xy is a 23rd chromosome pair that consists of an x shaped chromosome from the mother and a y shaped chromosome from the father, xy zygotes become males. Twins: monozygotic twins are twins who originate from one zygote that splits apart very early in development. Since nurture always affects nature, twins never have the same phenotype.
