In 1910, Morgan described the phenomenon of linkage and recombination between two sex-linked genes governing eye color in which of the following organisms?

✅Explanation:
-Thomas Hunt Morgan, a pioneering geneticist, made his groundbreaking discoveries on linkage and recombination using fruit flies (Drosophila melanogaster) in 1910. He observed that two genes related to eye color, red and white, remained physically linked on the X chromosome most of the time, resulting in non-independent assortment during inheritance.

📌 Other options Explanation:
-Mouse: While mice are commonly used in genetic research today, Morgan primarily relied on fruit flies in his 1910 experiments.
-Chicken: Birds have a different chromosome system compared to insects and mammals, making them unsuitable for Morgan's studies on sex-linked genes.
-C. elegans: This roundworm, although an important model organism in modern genetics, was not used by Morgan in his initial work on linkage and recombination.