Question

in shorthorn cattle, when a cow with a solid red coat color mates with a cow with a solid white coat color, they always produce offspring with a roan (both red and white) coat color. this is an example of what type of inheritance pattern?

• codominance
• multiple allele
• incomplete dominance
• sex - linked

Explanation:

• Codominance: In codominance, both alleles in a heterozygote are fully expressed. Here, the offspring show both red and white (roan) coat colors, which is a classic example of codominance.
• Multiple allele: Multiple - allele inheritance involves more than two alleles for a particular gene locus. But this problem only shows two alleles (for red and white) and their combined expression.
• Incomplete dominance: In incomplete dominance, the heterozygote has an intermediate phenotype (e.g., pink from red and white). But here, it's not an intermediate color but a combination of both parental colors.
• Sex - linked: Sex - linked inheritance is related to genes on sex chromosomes. There is no indication of sex - related inheritance in this problem.

Answer:

codominance