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Biology ch 13

Father of Genetics Gregor Mendel
what did gregor mendel do he studied inheritance patterns in pea plants,
heredity passing of traits from parent to offspring
alleles two forms of a gene that are represented by capital or lower case letters
dominant stornger of the two alleles expessed in the hybirid, R
recessive gene that is masked by the domimant, r
genotype gene combination for a trait (RR,Rr,rr)
pheontype the physical feature resulting from a geontype (red or white)
homozygous genotype gene combination involving the same kind of genes, aka pure
heterozygous genotype gene combination of one dominant and one ressive allele aka hybrid
punnett squares used to determine the probability of having a certian type of offspring when given the alleles of the parents
momohybrid cross cross involving a single trait
P1 the parental generation in a breeding experiment
F1 the first generation offspring in a breeding experiment
F2 the second generation offspring in a breeding experiment
Law of Dominance some genes of a pair of genes can dominate over the other gene, such that the individual appears to only have one of the allelse
Law of Segreation individuals have two genes for each trait, one from the mother and one from the father during sperm and egg formation these two genes separate so that each spder or egg has only one gene
Law of Independent Assortment during reproduction, the genes to different traits sort independently of each other in the egg and sperm
incomplete dominace when the heterozygote is intermediate to the homozygotes. Cross a red snapdragon with a white snapdragon and the offspring are pink.
codominance where both alleles are expressed. EX: A blood crossed with B blood creates AB blood
Espistasis when one gene inteferes with an allele to another gens.
incomplete dominance the heterozygous condition resluts in an intemediate third blended phenotype
codominance both alleles of a gene are expressed equally
multiple alleles when more than two different alleles exist for the same trait
Rh factor an inherited trait taht refers to a specific protien found on the surface of red blood cells. if you blood has the protien then your positive and if you don't have it then youre negative
multifactorial traits determined by interaction between a gene or gens and the environment
polygenic traits the inheritrance patter is controled by two or more genes each with two alleles
linked genes genes that are located on the same chrosome, and are often inherited togehter
universal recipent of blood AB+
universal donor of blood O-
sex-linked traits a gen found only on the x chrosome and not the y
barr body the inactive x chrosome of mamals
agglutination when blood antigens are mixed with corresponding antibodies
pedigree a graph or chart on studing a genetic syndrome
inheritance of mitochondrial DNA only inherited by moms egg, passes it to all of their offspring
Created by: ella27



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