Travlr
Well-known member
- Joined
- Feb 10, 2022
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- NW Arkansas, W South Dakota, retired in Utah
Yeah, the bull contributes one set of chromosome and the cow the other set. In fact the bull only contribute half in the female calves because he's contributing an X chromosome. In the case of a male calf the Y chromosome is shorter so the bull is contributing less than half.The other related question i would throw out there is: Does a bull really contribute 1/2 of the genetics of the calf? What about those one that "really stamp their calves"??? If 3/4 of the calves phenotype comes from the bull, does it make more sense to go with more inexpensive cows?? I am not a geneticist.
But he's also contributing 100% of whatever is on the male chromosome.
The way a trait is expressed depends on how each allele is triggered by a protein.