Wild-Type Neurospora Was Treated with X Rays to Induce Heritable

question 183

Essay

Wild-type Neurospora was treated with X rays to induce heritable mutations.Treated Neurospora cultures were grown on minimal medium ("no addition" in the table) and minimal medium supplemented with the indicated compounds.Growth is indicated as dry weight of fungal material after 5 days.The table shows the results of three mutated strains that were linked to the metabolic pathway that generates arginine. Without arginine production, Neurospora cannot grow.Considering the biochemical pathway of arginine production and experimental outcomes shown, which two strains are represented by the double mutant? Explain the evidence for your answer and why the other combinations cannot be correct.

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Definitions:

Epinephrine

Also known as adrenaline, it's a hormone and neurotransmitter involved in the "fight or flight" response.

Homeostatic Hormones

Compounds released by glands into the bloodstream to regulate bodily functions and maintain an internal balance.

Pancreatic Cells

Cells that comprise the pancreas, including insulin-producing beta cells and enzyme-producing exocrine cells.

Diabetes Mellitus

A group of metabolic diseases characterized by high blood sugar levels over a prolonged period due to the body's inability to produce or effectively use insulin.