Question

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Animals have anywhere from one to three opsin genes in their genomes. These genes encode proteins that sense different wavelengths of light and confer color vision. a. The relationship between the human opsin gene that senses light in the blue range and the dog opsin gene that senses light in the blue range is ✓ [Select] Pseudogene Ortholog Paralog the human opsin gene that senses light in the blue range and the human gene that senses light in the red range is [Select] c. Some old world primates have two opsin genes while others have three. Genome sequencing of some species containing two opsin genes has revealed that they actually appear to have three opsin genes, but one has become non-functional. This non-functional gene is Pseudogene

Answer 1

a. the relationship between human opsin gene that sense the light in blue range and dog opsin gene that sense light in the blue range.

ans. ortholog gene

Orthologous genes are homologous genes that diverged after evolution gives rise to different species, an event known as speciation. The genes generally maintain a similar function to that of the ancestral gene that they evolved from. In this type of homologous gene, the ancestral gene and its function is maintained through a speciation event, though variations may arise within the gene after the point in which the species diverged.

the relationship between human gene that sense light in the blue range and human opsin gene that sense light in red range is

paralog gene

Paralogous genes are homologous genes that have diverged within one species. Unlike orthologous genes, a paralogous gene is a new gene that holds a new function. These genes arise during gene duplication where one copy of the gene receives a mutation that gives rise to a new gene with a new function, though the function is often related to the role of the ancestral gene.

3. some old world primate have two opsin gene while other have three. genome sequencing of some species containing two opsin gene has revealed that they actually appeared to have 3 opsin gene. but one gene is non functional. this non functional gene is known as

ans. pseudogene

A segment of DNA that resembles a gene but is not functional and usually not transcribed. Pseudogenes often have functional paralogs in the same organism