0
When roan color in cattle is the result of incomplete dominance between red and white color genes how would one produce a herd of pure-breeding roan-colored cattle?
Wiki User
∙ 8y ago
Genetics is a tricky thing and there are no 100% guarantees that you will get the color you want. That being said the best possible way that this might be achieved would to test the genetics of each breeding pair. And continue to breed a successful pair, but have a care not to over breed them. A roan will not necessarily produce another roan either. Any born not of the color you want test to make sure of the genetics and decide to keep and breed or sell. It would take years of careful screening, breeding, trials and errors and disappointments. But with patience and persistence I believe that it would be possible. :)
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoIt's not possible. You breed roan to roan and you still have a high chance of producing white-bred or red cattle in addition to roans. See here:
RW = roan
WW = white
RR = red
Thus, using the Punnett square, RW x RW (a roan cow bred to a roan bull) gives the following:
25% Red
25% White
50% Roan
You are never going to get 100% roan offspring from a roan-to-roan cross, no matter if you're figuring this out on paper or trying to breed Shorthorn cattle (which are a prime example of this incomplete dominance theory). There's always a chance (a 50% chance actually) that the offspring will be either red or white and not roan. Why is this? Well it's because of one simple thing: incomplete dominance. If roan was dominant like black is in Angus cattle, then it would be possible to get 100% purebred roan cattle when roan Shorthorns are bred to roan Shorthorns (or when a homozygous black Angus bull is bred to a homozygous black Angus cow). But because it is NOT completely dominant, this cannot nor will ever happen.
Add your answer:
Earn +20 pts
The difference between incomplete and complete metamorphosis in insects is?
Metamorphosis is basically the cycle through which an insect matures. Complete metamorphosis consist of four stages : egg, larva, pupa and adult. While incomplete metamorphosis has three stages: egg, nymph and adult.
What does incomplete dominan ces mean?
This means that a trait which is expressed is between the dominant and recessive genes. This means both alleles are partially expressed.
Why pink snapdragons were produced instead of red snapdragons?
I am assuming you are talking about the breeding of a plant with white flowers and a plant with red flowers. The reason the new plants will have pink flowers is because the flower color in snapdragons is an example of INCOMPLETE dominance. Red is the stronger allele, but not completely... so the white it not completely overpowered. So the new trait of the new plant is somewhere in between the parent phenotypes: Red mixed with white- or pink! did you know they actually snap!!??!!
What is the difference between a young of a frog and the adult frog?
A young frog is a tadpole and has a tale and no legs while the adult frog has legs, but no tail.
A cross between a horse with red coat and a hourse with a white coat results in a roan horse with both red and white colors?
The actual term for this is refered to as "roaning" but the pattern is not patches but white and colored hair mixed together all over the body. It looks a little like older horses when the hair starts to turn white. Roans come in several different colors. (red roan, blue roan, black roan, ect.)
If an offspring shows a phenotype that is intermediate between the phenotypes of the parents what is this type of inheritance?
Incomplete dominance can create offspring that display a trait not identical to either parent but intermediate to the two. One example of incomplete dominance is a red flower and a white flower crossbreed to form a pink flower.
What is incomplete dominance between of a white and red cross?
a pink rose
Explain the difference between incomplete dominance and codominance?
Incomplete dominance is when one allele is not completely dominant over the other. Codominance is when both alleles contribute to the phentotype
When an individual displays a trait that is intermediate between the two parents?
incomplete dominance
When an idividual displays a trait that is intermediante between two parents?
incomplete dominance
What is an incomplete dominance between red hair and white hair?
red hair is cuter
What is key to the recognition of incomplete dominance?
The phenotype of the heterozygote falls between the phenotypes of the homozygotes.
Occurs when the heterozygous condition exists as an intermediate between the two homozygotes?
incomplete dominance
One allele is not completely dominant over another The heterozygous phenotype is somewhere in between the two homozygous phenotypes?
You get aspects of each trait displayed. Like, if one cat had a solid colored orange fur, and it's mate was brown, you could get a mottled cat. Or if one parent has brown eyes, and the other green, hazel eyes could occur.
Condition that exists when the heterozygous phenotype is somewhere in between the two homozygous phenotypes?
Incomplete dominance
How is phenotype expressed in a incomplete dominance?
It's expressed when a heterozygous phenotype is between two homozygous phenotypes.
How is incomplete dominance expressed in phenotype?
In complete dominance, only one allele in the genotype is seen in the phenotype. In codominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.
