3 (a) Figure 6 shows the bones in the limbs of a bird and a whale - Edexcel - GCSE Biology - Question 3 - 2023 - Paper 1
Question 3
3 (a) Figure 6 shows the bones in the limbs of a bird and a whale.
(i) The bird and the whale have evolved from a common ancestor.
Give one way the structure of th... show full transcript
Worked Solution & Example Answer:3 (a) Figure 6 shows the bones in the limbs of a bird and a whale - Edexcel - GCSE Biology - Question 3 - 2023 - Paper 1
Step 1
The bird and the whale have evolved from a common ancestor. Give one way the structure of these limbs provides evidence for this evolution.
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Answer
The limbs of both the bird and the whale show a similar pattern of bones, indicating a common evolutionary origin.
Step 2
Which scientist worked with Darwin on the theory of evolution by natural selection?
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Answer
Alfred Russel Wallace.
Step 3
Suggest one reason why DNA is found in bones.
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Answer
DNA is found in bones because it provides genetic information that is crucial for identifying the organism.
Step 4
Describe how stem cells help animals to grow.
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Answer
Stem cells help animals to grow by differentiating into various cell types, allowing the formation of new tissues and organs, and replacing damaged ones.
Step 5
Name one type of light sensitive cell found in the retina.
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Answer
Cone cells.
Step 6
Explain one reason for transplanting stem cells into the retina.
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Answer
Transplanted stem cells can replace damaged retinal cells, which may help to correct blindness or improve vision.
