Genetics Terms: Twins, Traits, Genotype, Phenotype, Behavioral Genetics, Disorders, Quizzes of Human Development

Download Genetics Terms: Twins, Traits, Genotype, Phenotype, Behavioral Genetics, Disorders and more Quizzes Human Development in PDF only on Docsity! TERM 1 monozygotic twins DEFINITION 1 twins whoa re genetically identical TERM 2 dizygotic twins DEFINITION 2 twins who are produced when two sparate ova are fetilzed by two separate sperm at rought the same time. TERM 3 dominatant trait DEFINITION 3 trait that is expresed when two competing traits are present TERM 4 recessive train DEFINITION 4 a trait within an organism thtat is present but not expresed TERM 5 genotype DEFINITION 5 underlying combination of genertic materail present in an organism (does have to be visible) TERM 6 phenotype DEFINITION 6 obersabable train , actually seen TERM 7 omozygous DEFINITION 7 inheriting from parents similar genes for a given trait TERM 8 heterozygous DEFINITION 8 inherting from partents different forms of a gene for a given trait TERM 9 behavioral genetics DEFINITION 9 the study of the effects of heredity on behavior TERM 10 down sydrome DEFINITION 10 extra chormosome on the 21st pair...mogolism..1 out of 500 births TERM 21 germinal stage DEFINITION 21 first and shortest stage of prenatal period . first two weeks follwoing conception TERM 22 embryonic stage DEFINITION 22 2-8 weeks foling fertizion during which significant growth occurs and the major organs and body systemsectodermmesodermendoerm TERM 23 fetal stage DEFINITION 23 8 weeks after conception and contnues til birth TERM 24 fetus DEFINITION 24 developing child from 8 weeks after conception until birth TERM 25 teratogen DEFINITION 25 factor that produces a birth defecttiming and quanity of exposure is crucial