click below
click below
Normal Size Small Size show me how
Heredity
LAB Study Stack
Question | Answer |
---|---|
Actual genetic makeup | Genotype |
Chromosomes determining malesness/femaleness | Sex Chromosomes |
situation in which an individual has identical alleles for a particular trait | Homozygons |
genes not expressed unless they are present in homozygous condition | recessive |
Expression of a genetic trait | phenotype |
Situation in which an individual has different alleles making up his genotype for a particular trait | heterozygous |
genes for the same trait that may have different expressions | alleles |
chromosomes regulating most body characteristics | autosomes |
The more potent gene allele: masks the expression fo the less potent allele | dominant |
What does it mean when someone says a particular characteristic is sex-linked? | It is carried on the F(X) sex chromosome |
You are a male and you have been told that hemophilia "runs in your genes" whose ancestors, should you investigate? Moms or Dads? | Moms because males can only receive the X chromosome from their mothers, the fathers contribution is always Y |
Why are marriages between blood relatives prohibited in most cultures? | Because blook relatives have similar gene pools thus the likelihood of receiving a double-dose of recessive genes is increased. |
Phenylthiocarbamide (PTC); | Is extremely bitter tasting to some people |
DNA has a negative charge due to; | a negative backbone |
DNA moves through gel: | away from negative toward positive electrode |