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Question: In Texas Longhorn cattle, coat coloration is an inherited trait. What is the genetic basis of coat-color variation in Texas Longhorn cattle? A.Differences in the diets of individual cattle. B.Differences in the numbers of chromosomes in cells. C.Differences in the environmental conditions of different geographic areas. D.Differences in the nucleotide sequence of genes.
The genetic basis of coat-color variation in Texas Longhorn cattle is primarily due to: D. Differences in the nucleotide sequence of genes. Coat coloration is a heritable trait, and variations in this trait are determined by differences in the genetic code (the sequence of nucleotides) in the DNA of the cattle. These genetic variations can lead to different expressions of pigmentation genes, resulting in the diverse coat colors observed in Texas Longhorn cattle.
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