click below
click below
Normal Size Small Size show me how
science 7th
test
Question | Answer |
---|---|
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 |