Year 11 in England
10th grade cells, genetics and evolution
3 10th grade cells, genetics and evolution skills, each with a worked example, free practice that checks every answer, and a printable worksheet. Start with a mixed review, or jump to the skill you need.
Mixed review
Ten questions drawn from every skill below.
From gene to protein: transcription and translation
CCSS NGSS.HS-LS1-1CCSS NGSS.HS-LS3-1England: GCSE Biology: Inheritance, variation and evolution (protein synthesis)
Example
Why is an mRNA copy needed? DNA could be used directly…
- mRNA is small enough to pass through pores in the nuclear membrane.
- So the answer is: DNA is too large to leave the nucleus, so a smaller copy carries the code to the ribosome
Answer: DNA is too large to leave the nucleus, so a smaller copy carries the code to the ribosome
Builds on: DNA, genes and chromosomes
Leads to: Bases, codons and amino acids: genetic code calculations
Write complementary DNA and mRNA base sequences
CCSS NGSS.HS-LS1-1CCSS NGSS.HS-LS3-1England: GCSE Biology: Inheritance, variation and evolution (DNA structure)
Example
One strand of DNA reads TGT TCT CTA. Write the complementary DNA strand (letters only).
- TGTTCTCTA → ACAAGAGAT
- So the answer is: ACAAGAGAT
Answer: ACAAGAGAT
Evidence for evolution and how new species form
CCSS NGSS.HS-LS4-1CCSS NGSS.SEP 7England: GCSE Combined Science: Inheritance, variation and evolution
Example
Approximate % difference between human DNA and other primates: chimpanzee 1.2 %, orangutan 3.1 %, rhesus macaque 7 %. Which primate shares the most recent common ancestor with humans?
- The smallest difference is 1.2 %.
- So the answer is: chimpanzee
Answer: chimpanzee
Builds on: Natural selection and resistance
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Math, English and science that click.