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Gregor Mendel studied inheritance in pea plants - Edexcel - GCSE Biology - Question 1 - 2022 - Paper 1
Question 1
Gregor Mendel studied inheritance in pea plants. Pea plants can produce either yellow pea pods or green pea pods. Mendel crossed plants that always produce yellow ... show full transcript
Worked Solution & Example Answer:Gregor Mendel studied inheritance in pea plants - Edexcel - GCSE Biology - Question 1 - 2022 - Paper 1
Step 1
Step 2
Give this as a ratio in its simplest form.
Answer
From the second cross, the number of plants produced was:
- Yellow pea pods: 5,496
- Green pea pods: 1,832
To find the ratio of yellow to green pea pods, we first express it as:
ext{Ratio} = rac{5496}{1832}
Now simplifying this ratio:
- Divide both numbers by their greatest common divisor (GCD). The GCD of 5496 and 1832 is 4.
rac{5496 ext{ divided by } 4}{1832 ext{ divided by } 4} = rac{1374}{458}
Dividing again by the GCD which is now 2: rac{1374 ext{ divided by } 2}{458 ext{ divided by } 2} = rac{687}{229}
Thus, in simplest form, the ratio of yellow to green pea pods is 687:229.