Lesson Plan: B2.4.02

LESSON PLAN

Teacher	Subject	Period	Date	Year	Ability	LSA/Other Support
	Science

Context and Landmark Assessment	B2.4.02 Landmark Assessment: Progress Observation Opportunity

Remember to have high expectations

Lesson Title: Today we are learning about
How is variation in organisms created?

Remember to check for PROGRESS
Focus on Knowledge, Skills and Understanding

Success Criteria:	You will show your learning by...
Students should be able to describe simply how the genome and its interaction with the environment influence the development of the phenotype of an organism Differences in the characteristics of individuals in a population is called variation and may be due to differences in: - the genes they have inherited (genetic causes) - the conditions in which they have developed (environmental causes) - a combination of genes and the environment Students should be able to state that there is usually extensive genetic variation within a population of a species A recessive allele is only expressed if two copies are present (therefore no dominant allele present). (Biology only) Mutations occur continuously. Very rarely a mutation will lead to a new phenotype. If the new phenotype is suited to an environmental change it can lead to a relatively rapid change in the species. There are links with this content to Speciation (biology only). Students should be able to describe evolution as a change in the inherited characteristics of a population over time through a process of natural selection which may result in the formation of a new species. The theory of evolution by natural selection states that all species of living things have evolved from simple life forms that first developed more than three billion years ago. Students should be able to explain how evolution occurs through natural selection of variants that give rise to phenotypes best suited to their environment. Use the theory of evolution by natural selection in an explanation. If two populations of one species become so different in phenotype that they can no longer interbreed to produce fertile offspring they have formed two new species.

Success Criteria:

You will show your learning by...

Students should be able to describe simply how the genome and its interaction with the environment influence the development of the phenotype of an organism
Differences in the characteristics of individuals in a population is called variation and may be due to differences in: - the genes they have inherited (genetic causes) - the conditions in which they have developed (environmental causes) - a combination of genes and the environment
Students should be able to state that there is usually extensive genetic variation within a population of a species
A recessive allele is only expressed if two copies are present (therefore no dominant allele present).
(Biology only) Mutations occur continuously. Very rarely a mutation will lead to a new phenotype. If the new phenotype is suited to an environmental change it can lead to a relatively rapid change in the species. There are links with this content to Speciation (biology only).
Students should be able to describe evolution as a change in the inherited characteristics of a population over time through a process of natural selection which may result in the formation of a new species.
The theory of evolution by natural selection states that all species of living things have evolved from simple life forms that first developed more than three billion years ago.
Students should be able to explain how evolution occurs through natural selection of variants that give rise to phenotypes best suited to their environment. Use the theory of evolution by natural selection in an explanation.
If two populations of one species become so different in phenotype that they can no longer interbreed to produce fertile offspring they have formed two new species.

Think about how you can match the needs of ALL students

Keywords:

Species: a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. (1)
Population: a community of organisms among whose members interbreeding occurs. (1)
Variation: the differences between organisms of the same species. (1)
Genome: the complete set of genes or genetic material present in a cell or organism. (1)

Links: Literacy, Numeracy, SMSC, British values

Memory Anchor:

AFL/Key Questions:

How does the genome and the environment influence the development of phenotype?
An organisms genome depends on the alleles that the organism inherits. Dominant characteristics inherited from the parents will be expressed always. If no dominant alleles are present then the recessive ones will be expressed. The environment can also affect certain phenotypes through variations in climate diet, physical accidents, culture and lifestyle.
How do differences in the characteristics of individuals occur?
Differences in the characteristics of individuals in a population is called variation and may be due to differences in: - the genes they have inherited (genetic causes) - the conditions in which they have developed (environmental causes) - a combination of genes and the environment
How much genetic variation is usually within a population?
There is usually extensive genetic variation within a population of a species.
When is a recessive allele expressed?
A recessive allele is only expressed if two copies are present (therefore no dominant allele present).
(Biology only) How often do mutations occur and how often do they lead to a new phenotype? What happens when a new phenotype is suited to an environmental change?
(Biology only) Mutations occur continuously. Very rarely a mutation will lead to a new phenotype. If the new phenotype is suited to an environmental change it can lead to a relatively rapid change in the species.
What is evolution?
Evolution is a change in the inherited characteristics of a population over time through a process of natural selection which may result in the formation of a new species.
What does the theory of evolution state?
The theory of evolution by natural selection states that all species of living things have evolved from simple life forms that first developed more than three billion years ago.
How does evolution occur?
Evolution occurs through the natural selection of variants that give rise to phenotypes best suited to their environment.
How is a new species formed?
If two populations of one species become so different in phenotype that they can no longer interbreed to produce fertile offspring they have formed two new species.

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