Lesson Plan: B2.3.04


LESSON PLAN
Teacher Subject Period Date Year Ability LSA/Other Support
Science

Context and
Landmark
Assessment		 B2.3.04
Landmark Assessment: Progress Observation Opportunity
Remember to have high expectations
Lesson Title: Today we are learning about
How are sexual and asexual reproduction different?
Remember to check for PROGRESS
Focus on Knowledge, Skills and Understanding
Success Criteria: You will show your learning by...
  1. Meiosis leads to non-identical cells being formed
  2. Mitosis leads to identical cells being formed.
  3. Sexual reproduction involves the joining (fusion) of male and female gametes: ? sperm and egg cells in animals ? pollen and egg cells in flowering plants.
  4. In sexual reproduction there is mixing of genetic information which leads to variety in the offspring.
  5. The formation of gametes involves meiosis.
  6. Asexual reproduction involves only one parent and no fusion of gametes.
  7. There is no mixing of genetic information. This leads to genetically identical offspring (clones). Only mitosis is involved.
  8. (HT only) Mutations occur continuously. Most do not alter the protein, or only alter it slightly so that its appearance or function is not changed.
  9. (HT only) A few mutations code for an altered protein with a different shape. An enzyme may no longer fit the substrate binding site or a structural protein may lose its strength.
  10. (HT only) Modelling insertions and deletions in chromosomes to illustrate mutations
  11. (HT only) A few mutations code for an altered protein with a different shape. An enzyme may no longer fit the substrate binding site or a structural protein may lose its strength.
  12. (HT only) Not all parts of DNA code for proteins. Non-coding parts of DNA can switch genes on and off, so variations in these areas of DNA may affect how genes are expressed.
Think about how you can match the needs of ALL students
Keywords:
  • Asexual Reproduction: Reproduction from one parent producing an identical clone of the parent. (1)
  • Sexual Reproduction: Reproduction involving two parents creating unique offspring (1)
  • Gamete: sex cells that fuse during sexual reproduction. (1)
  • Meiosis: cell division that forms unique haploid gametes. (1)
Links: Literacy, Numeracy, SMSC, British values
Memory Anchor:

AFL/Key Questions:
  1. What sort of cells are produced during meiosis?
    Meiosis produces non-identical cells.
  2. What sort of cells are produced during mitosis?
    Mitosis produces identical cells.
  3. What happens during meiosis? What are examples of gametes in animals and flowering plants?
    During sexual reproduction male and female gametes are fused. The gametes of animals are sperm and egg cells and the gametes of flowering plants are pollen and egg cells.
  4. How is variety gained during sexual reproduction?
    Genetic information is mixed during sexual reproduction which leads to variety.
  5. What process allows gametes to be formed?
    Gametes are formed through meiosis.
  6. How is asexual reproduction different to sexual reproduction?
    Asexual reproduction involves only one parent and no fusion of gametes.
  7. How does asexual reproduction lead to clones?
    There is no mixing of genetic information therefore all offspring is genetically identical.This is due to asexual reproduction using only mitosis.
  8. What is the effect on the protein if one DNA base is altered due to a mutation?
    Most do not alter the protein, or only alter it slightly so that its appearance or function is not changed. (Mutations occur continuously)
  9. What is the effect on the protein if a few DNA bases are altered due to continious mutations?
    A few mutations code for an altered protein with a different shape. An enzyme may no longer fit the substrate binding site or a structural protein may lose its strength.
  10. The normal coding for a gene is GGA ATG. What is the type of mutation for: 1. GGC ATG 2. GGA AT
    1. Insertion 2. Deletions
  11. Why does a having few mutations in the DNA code cause problems?
    A few mutations code for an altered protein with a different shape. An enzyme may no longer fit the substrate binding site or a structural protein may lose its strength.
  12. How can mutations in non-coding parts of DNA affect how genes are expressed?
    Not all parts of DNA code for proteins. Non-coding parts of DNA can switch genes on and off, so variations in these areas of DNA may affect how genes are expressed.
Identify questions for high, middle, low and identify questioning techniques- Challenge questions

Learning Phases/Episodes
Think about how you can match the needs of ALL students
Differentiation: AGT, SEND, LLL, Disadvantaged
Remember to check for PROGRESS
Starter Activity Differentiation and Challenge question/task
  • Students to copy and complete the keywords.
  • Teacher reveals missing letters; Students correct mistakes;
  • Discuss the scientific meanings of the words.
  • Students to write down the definitions of the most important / new keywords.
  • Discuss the 'Memory Anchor'.
    • What does it show?
    • How does it relate to the what we are learning about today (title)?
Think about PACE – Develop, consolidate and deepen knowledge, skills and understanding
Teacher or Student lead? Differentiation and Challenge question/task
Progress Check Extension
Remember to give time to apply knowledge, skills and understanding
Teacher or Student lead? Differentiation and Challenge question/task
Progress Check Extension

Teacher or Student lead? Differentiation and Challenge question/task
Progress Check Extension

Teacher or Student lead? Differentiation and Challenge question/task
Progress Check Extension


Plenary Differentiation and Challenge question/task
  • Students to answer the 'Key Questions' with learning partners.
Progress Check
  • Teacher to reveal and discuss the answers to the questions.
 Extension
  • What have learnt about the 'Big Ideas' today?

Homework Differentiation and Challenge question/task