inheritance
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what is inheritance
inheritance is the transmission of traits from one generation to another
what is monohybrid inheritance
an inheritance of one characteristic that has two contrasting forms
why does observed ratio often differ from expected ratio for inheritance
ratios are innaccurate when the sample size is small. the observed ratio is based on chance and probabilites due to the random nature of fertilisation. the actual number of offspring is unlikely to match the expected ratio exactly
what are alleles?
alleles are different forms of the same gene. they occupe the same relative position on a pair of homologous chromosomes
what are homologous chromosomes
homologous chromosomes are similar in shape and length (*reject size) they have the exact same sequence of genes homologous chromosomes come in pairs–> one from father, one from mother