inheritance Flashcards
what is an allele
a version of a gene
what is a dominant allele
represented by capital letter, gene the shows up on phenotype
what is recessive allele
represented by small letter, other allele present in gene
what is a genotype
combination of allele
homozygous dominant
both dominant alleles are present
homozygous recessive
both recessive alleles are present
what is heterozygous
two different forms of the allele are present
what is a phenotype
the outward appearance of the individual
what is polygenic inheritance
characteristic controlled by MANY genes
what is monogenic inheritance
a characteristic controlled by ONE gene
what is codominance
neither allele is dominant or recessive
how many phenotypes can be expressed in codominance
3
describe a natural selection question
m - mutation
v - variation in the population
a - advantage (link to q)
r - reproduce
p - pass on allele
s - through several generations
why does bacterial resistance happen
1) a bunch of bacteria include a resistant variety
2) are bathed in antibiotics
3) most normal die bar the resistant
4) that one multiply and become more common
5) eventually entire infection become resistant
if an individual had the genotype IBIo, what is their phenotype
blood group B
