dominant and recessive alleles Flashcards
what are different forms of genes called
alleles
when might genetic variation occur
when the offspring or child has two different copies of every gene
state a dominant characteristic
dimples
dominant allele
if one or both of parents have this allele you will too
recessive allele
ONLY if BOTH your parents have the allele you will too
dominant writing style
upper case B
recessive writing style
lower case b
genotype
combination of alleles present in organism
homozygous
two copies of the same allele
BB homozygous dominant
bb homozygous recessive
heterozygous
Bb
they have different versions of a gene
examples of dominant
dark brown hair
brown eyes
not attached earlobes
freckles
can roll tongue
straight nose
examples of recessive
no freckles
can’t roll tongue
joined ear lobes
blue eyes
blonde hair