genetics

RR’ two dominant alleles who are both expressed in heterozygotes which gives a mix of both colors (spots) RR RR’ R’R’

genes only on the X chromosome therefore, man are more likely to “suffer” form x-linked diseases since they only have one X and one affected = sick. Woman = 2 man and for the sickness to show both X must be affected (less likely)

when they are two genes in different loci. Ex: if there is hair or not; what pigment is the color.

recessive lethal when you have this gene: the offspring will not survive Dominant: only transmitted one generation: very rare

infertility

offspring mix of parents

parents with same phenotype give a child with same phenotype as well

expressed = the one that is seen (dominent) latent = not seen (recessive)

two homozygous parents

Y? crossed with yy to see if Y? is heterozygous or homosygous

characteristic

alternative versions of a gene

same locus on homologues chromosomes; but sister chromatids are the same if Aa on of the chromosomes will have both sister chromatids AA the other aa