Ch 7 Voc Flashcards
Carrier
does not show trait, but can pass it on
Sex linked genes
Genes located on the sex chromosome
What is the male and female genotype for humans
Females are XX
Males are XY
X Chromosome inactivation
when one x chromosome in females turns off
incomplete dominance
a heterogeneous phenotype that is somewhere between the two homozygous phenotype
results in blending of the two dominate phenotypes
codominance
both traits are fully and separately expressed (in a color related trait some parts of the organism would be one color and other parts would be another)
polygenic traits
traits produced by two or more genes
Pedigree
a chart used to help trace phenotypes and genotypes in a family to determine whether people carry recessive alleles.
karyotype
is a picture of all of the chromosomes in a cell. The chromosomes are stained, which produce a pattern so they can be paired with their homologous mate.