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science 7th

test

QuestionAnswer
traits different physical characteristics
heredity passing of traits from parents to offspring
allele different types of genes
gene factors that control traits
dominant allele masks recessive allele when present
recessive allele gets masked when dominant allele is present
phenotype physical appearance
genotype genetic makeup of an organism
Gregor Mendel found out how to cross pollenate
homozygous 2 of the same alleles
heyerozygous 2 different alleles
purebred an organism with 2 of the same alleles
hybrid an organism with 2 different alleles
4 different parent combinations that could result in wrinkled pea seeds ww x Ww Ww x Ww ww x ww Ww x ww
pedigree a family tree
symbols of a pedigree 0 = female X = male
carrier an organism that has a trait but is masked by the dominant allele but can pass it on to the offspring
number of chromosomes in a human cell 92
number of chromosomes in a sex cell 46
Created by: biff
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