The breast cancer gene BRCA1 has a very similar sequence in humans,mice,and gorillas,due to its origination in a common ancestor.The BRCA1 genes in these species are examples of ________.

Question

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Orthologs are genes in different species that share a common ancestor and have similar functions due to evolutionary conservation. The example given in the question - the BRCA1 gene in humans, mice, and gorillas - fits this definition of orthologs. Paralogs, on the other hand, are genes that arise through gene duplication events within a species and may have diverged in function. Polyploidy refers to having multiple copies of entire genomes, which is not relevant in this context. Synteny refers to the arrangement of genes on chromosomes and is not applicable to this question.

The Breast Cancer Gene BRCA1 Has a Very Similar Sequence