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23 terms

MENDELIAN GENETICS by msfairbio

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genotype
the genes an organism has for a trait
phenotype
the trait produced by genes
alleles
different forms of a gene that cause slightly different variations of a trait
heterozygous
describes an organism with two different alleles for a trait
homozygous
describes an organism with two of the same alleles for a trait
dominant
the allele that masks the recessive
recessive
the allele that is masked by the dominant
monohybrid
cross which investigates just one trait
dihybrid
cross which investigates two traits at the same time
segregation
the separation of the 2 alleles for a trait into different gametes
independent assortment
rule which states that alleles for 2 different traits segregate into gametes independently of each other
codominance
both alleles are expressed in the heterozygote; neither allele is recessive
incomplete dominance
neither allele is fully dominant or recessive; the heterozygote is a mixture of the dominant and recessive trait
multiple alleles
type of inheritance where there are more than 2 alleles in the population for a given trait
polygenic inheritance
many sets of genes, not just one, work together to produce a trait
25%
chance that a child will have a recessive trait if both parents are carriers
genetics
scientific study of inheritance of traits
gene
segment of DNA that codes for a protein
gamete
sperm or egg
zygote
a fertilized egg
FF
homozygous dominant
ff
homozygous recessive
Ff
heterozygous