Figure 4 shows a great tit on a bird feeder - Edexcel - GCSE Biology Combined Science - Question 3 - 2020 - Paper 1
Question 3
Figure 4 shows a great tit on a bird feeder.
Scientists have found that great tits living now have longer beaks than great tits living 50 years ago.
Genetic analys... show full transcript
Worked Solution & Example Answer:Figure 4 shows a great tit on a bird feeder - Edexcel - GCSE Biology Combined Science - Question 3 - 2020 - Paper 1
Step 1
Give the complementary strand sequence for this DNA template.
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Answer
The complementary strand sequence for the given DNA template A T G T T A C G T is T A C A A T G C A.
Step 2
Which statement correctly describes a DNA molecule?
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Answer
The correct statement that describes a DNA molecule is:
C a double helix with strands joined by hydrogen bonds between bases.
This accurately describes the structure of DNA, which is made of two strands wound into a helical shape, with base pairs connected by hydrogen bonds.
Step 3
State the term used to describe a change in the sequence of DNA bases.
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Answer
The term used to describe a change in the sequence of DNA bases is Mutation. This can refer to any alteration in the genetic sequence, which may result in changes to the organism's traits.
