HDF 100 Chapter 2: Chapter 2 HDF 100 Fall 2015
16 Feb 2017
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Heredity and prenatal development, chapter two, genetic influences are fundamental in transmission of, physical traits, psychological traits such as intelligence, activity level. Schizophrenia: depression, dependence on nicotine, alcohol and other substances. Twins: monozygotic (identical) twins which are the _____result of a result of a single zygote_______ (fertilized egg) Splitting into two cell masses and becoming two individuals: dizygotic (frateral) two eggs are produced in the same month and they are each. Fertility drugs stimulate the ovaries, increasing the odds of several eggs being released at the same time. On average, _______20%_______ of women taking fertility drugs will become pregnant with more than one baby: ovulation . As woman nears end of child-bearing years, ______ovulation becomes less regular___ , thus increasing likelihood of twins: approximately 8. 5% of couples are infertile. ___________irregular ovulation including failure to ovulate and stress______ (most common) Obstructions or malfunctions of the reproductive tract.
