Ok
Ill try not to refer to my Mack snows as Hets, on here.
The reason many books are confusing about the Heterozygous thing with the other forms of expression, was because Mendel developed the term dominant and recessive, and those were the only traits he looked at, not the codominant or incomplete dominant traits so the books start off stating that, and some specifically say not blending of traits, but that specifically points out what Mendel was studying, how some traits disappeared then reappeared, and the ratios involved. Not that he did not encounter co dominance and incomplete dominance he probably just chose not to use them in his experiments.
Later on came the Punnett Square and the incomplete and codominance and the terms heterozygous and homozygous, a lot of texts don’t take the step back and say, now is when the blending is explained and allele wise it still follows the Punnett square,
They (many texts) also lead to the assumption that you can only have dominant or recessive in a Punnett square.
Linkage and sex linkage is where the numbers start to stray.
Ill try not to refer to my Mack snows as Hets, on here.
The reason many books are confusing about the Heterozygous thing with the other forms of expression, was because Mendel developed the term dominant and recessive, and those were the only traits he looked at, not the codominant or incomplete dominant traits so the books start off stating that, and some specifically say not blending of traits, but that specifically points out what Mendel was studying, how some traits disappeared then reappeared, and the ratios involved. Not that he did not encounter co dominance and incomplete dominance he probably just chose not to use them in his experiments.
Later on came the Punnett Square and the incomplete and codominance and the terms heterozygous and homozygous, a lot of texts don’t take the step back and say, now is when the blending is explained and allele wise it still follows the Punnett square,
They (many texts) also lead to the assumption that you can only have dominant or recessive in a Punnett square.
Linkage and sex linkage is where the numbers start to stray.
