Biology 8461: Inheritance, Variation and Evolution Topical Past Paper Questions

Glyphosate is a herbicide used in agriculture. Soya bean plants have been genetically modified (GM) to be resistant to glyphosate. A farmer can increase the yield of soya beans by: • growing GM soya bean plants • spraying glyphosate on the field. 1) Explain how the use of GM soya…

A wide variety of species exists on Earth. Most scientists accept Darwin's theory of evolution by natural selection as the explanation for this variety of species. Explain how our understanding of evolution has developed due to: • fossil evidence - increased understanding of the…

Maple syrup urine disease (MSUD) is a rare inherited human condition. MSUD is usually diagnosed early in childhood and can be controlled by having a low-protein diet. Figure 4 shows the inheritance of MSUD in one family. Figure 4 The allele for MSUD is recessive. 1 Give one piece…