HD 101 1st Edition Lecture 6 Outline of Last Lecture 1. Genotype and phenotype 2. Genetic foundation a. Chromosomesb. Genes c. DNA3. Chromosomes, cells, and sex terminology a. Autosomes b. Sex chromosomesc. Gametesd. Zygotes4. Twins a. Fraternal/dizygotic b. Identical/monozygotic 5. Inheritance a. Dominant b. Recessive 6. Chromosomal abnormalities a. Downs syndrome These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.b. Sex chromosome abnormalities 7. Reproductive informationa. Genetic counseling b. Parent diagnostic methods - Amniocentesis - Chronis villus sampling - Ultrasound - Maternal blood analysis - Preimplantation genetic diagnosis 8. Indicator of children’s health and wellbeing9. How much does heredity contribute to behaviora. Heritability estimations b. Kinship studies Outline of Current Lecture1. Periods of development: a. Zygoteb. Embryo c. FetusCurrent Lecture1. Periods of development: a. Zygote: (first two weeks) - Fertilized egg is called zygote - Period ends when zygote implants in uterine wall- Outer sac: chorion, from which the placenta is developed - Inner sac: amino- holds amniotic fluid - Umbilical cord connects developing child to the placentab. Embryo: (3-8 weeks) - Outer layer (ectoderm) becomes hair, outer layer of skin and nervous system are developed- Middle layer (endoderm) forms muscles, bone, and circulatory system - Heart starts beating in this stage - Growth begins from head to base of spine (cephalo –caudai)- Growth goes from center of body out (proximal-distal)c. Fetus: information on fetus will be in next
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