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A cell undergoing meiosis produces a daughter cell, during which one nondisjunction event occurs. If the number of chromosomes in a normal diploid cell of this […]

In the mid-seventeenth century, Dutch scientist Jan Baptista van Helmont struggled to understand where plants get the material that allows them to grow larger. He planted […]

Choose at least one that you found useful and comment on how the website helped you with this week’s content. The comment should be 150 words […]

Q1. In the last few decades remarkable fossils have been discovered indicating that the ancestor of cetaceans (whales, dolphins, and porpoises) was a four-legged, terrestrial (land) […]

Consider two hypothetical recessive autosomal genes a and b, where a heterozygote is testcrossed to a double-homozygous mutant. Predict the phenotypic ratios under the following conditions. […]