Lets say you where to use a RIR rooster over a White Leghorn hen.
Is it the young roosters from there hatch that will take after the leghorn and have the (K+) gene?
The rate of feather growth genes, in order of dominance are: K^n>K^s>K>k+. In this case we're really only talking about K & k+. These genes, like all sex linked genes, are found on the Z sex chromosome. The lower case k denotes that this is the most recessive allele & the + denotes that this is the allele considerd to be wild type.
RIR male would be expected to be K/K & a leghorn female would be expected to be k+/- (because she only has one Z chomosome). A cross between the two would give females which are K/- & male offspring which are K/k+. Thus both males & females will have one K allele (dominant).
It works the same way as using a barred male on a non barred female....the male offspring would be B/b+, the female offspring would be B/- thus all offspring would have one barring gene & would look much the same at hatch.
Is it the young roosters from there hatch that will take after the leghorn and have the (K+) gene?
The rate of feather growth genes, in order of dominance are: K^n>K^s>K>k+. In this case we're really only talking about K & k+. These genes, like all sex linked genes, are found on the Z sex chromosome. The lower case k denotes that this is the most recessive allele & the + denotes that this is the allele considerd to be wild type.
RIR male would be expected to be K/K & a leghorn female would be expected to be k+/- (because she only has one Z chomosome). A cross between the two would give females which are K/- & male offspring which are K/k+. Thus both males & females will have one K allele (dominant).
It works the same way as using a barred male on a non barred female....the male offspring would be B/b+, the female offspring would be B/- thus all offspring would have one barring gene & would look much the same at hatch.
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