TEL315Chapter3[1]

TEL315Chapter3[1] - Forming a New Life Click to edit Master...

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Click to edit Master subtitle style 2/23/11 Forming a New Life
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2/23/11 OUTLINE Conceiving new life Mechanisms of Heredity Prenatal Development Monitoring/Promoting Prenatal Development
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2/23/11 Conception Fertilization: union of ovum & sperm = zygote which then duplicates through cell division Multiple births: fertilization of 2 ovum or splitting of 1 fertilized ovum Dizygotic (fraternal) Monozygotic (identical)
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2/23/11 Mechanisms of heredity Genes: basic functional unit of heredity, genes are made up of DNA Each gene is located by function on a definite position on a particular chromosome Human Genome: complete sequence of genes in the human body 23 from mother, 23 from father (22 autsome, 1 pair of sex chromosome)
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2/23/11 Patterns of genetic inheritance Dominant/recessive inheritance Allele (alternate forms of a gene) Homozygous Heterozygous Polygenic/multifactorial transmission along with dominant inheritance explain why a phenotype is not always an exact expression of genotype
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TEL315Chapter3[1] - Forming a New Life Click to edit Master...

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