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#bio
Allele
definition
#card/reverse A specific variation of a gene that produces a specific characteristic. ^1652853823262
Encoding
- For each characteristic, most organisms have ==two alleles==. ^1652853823270
- These alleles are most often passed on encoded in chromosomes; one from mom and one from dad.
- some organisms have just one chromosome ==(haploid)== or multiple chromosomes ==diploid, triploid, tetraploid==
- gametes only carry one allele/chromosome.
can be dominant or recessive.
Dominant phenotype ::: at least one dominant allele. Recessive phenotype ::: both alleles are recessive.
incomplete dominance
ratio of 1:2:1, with the 2 showing a blend of the other two traits. If both are #^c5aafd.
Alleles can be matching or not
Homozygous ::: Carries the same two alleles for a given characteristic. Heterozygous ::: Carries one of each alleles for a given characteristic. ^c5aafd
You can tell which the parents are based off of offspring; if, for example, the offspring (3rd gen) carry the full diversity of the first generation, then the second-gen parents must necessarily be Heterozygous.