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Reproduction and variation

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Lesson outcome

Waxaan sharxi karaa sababta ubadku ugu ekaado waalidkood laakiin aan u ekaansho, isla markaana aan isku ekaansho.

Introduction

In this lesson: I can explain why offspring look similar but not identical to their parents and one another. When organisms reproduce they make offspring of the same kind (species resemblance) Offspring inherit features from both parents, so they look similar to their parents and one another (family resemblance)

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When organisms reproduce they make offspring of the same kind (species resemblance) Offspring inherit features from both parents, so they look similar to their parents and one another (family resemblance) Some features are inherited when DNA is passed from parents to offspring during reproduction Some features are caused (or changed) by an organism’s lifestyle and environment There is usually variation between offspring; they are not usually identical to their parents or one another

Worksheet

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Quizzes

  1. 1. Which MRS GREN process describes the ability of an organism to make offspring?

    • movement
    • respiration
    • growth
    • Correct answer:reproduction
    • nutrition

  2. 2. Where is DNA stored in an animal cell?

    • cytoplasm
    • Correct answer:nucleus
    • vacuole

  3. 3. Where is DNA stored in a bacterial cell?

    • nucleus
    • vacuole
    • Correct answer:cytoplasm

  4. 4. How many biological parents does an organism have if it is made through sexual reproduction?

    • one
    • Correct answer:two
    • three

  5. 5. Who has the correct idea about reproduction?

    • Correct answer:a black and white drawing of a girl's face with a smile on it's face, with the word smile in the middle of the imageAll living organisms can reproduce.
    • a black and white drawing of a woman's head with a bun in her hair and a smile on her faceOnly organisms that make eggs or pollen can reproduce.
    • a black and white drawing of a man with glasses and a curly - haired man's head is smilingAll organisms reproduce by either laying eggs or giving birth to a baby.

  1. 1. True or false? Scars are examples of characteristics that can be inherited.

    • True
    • Correct answer:False

  2. 2. Which of these features are caused **only** by DNA?

    • height
    • Correct answer:blood type
    • Correct answer:eye colour
    • hair length

  3. 3. Some of the variation between offspring that have the same parents is caused by the genes inherited from …

    • the mother only.
    • the father only.
    • Correct answer:both parents.

  4. 4. Features that are influenced by the environment typically have __________ variants than those influenced by genes alone.

    • Correct answer:more
    • fewer
    • the same number of

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare
  • Starter quizActivate · 5 questions
  • Lesson videoLearn
  • Exit quizCheck · 4 questions
This content is by Cashar and published under an open licence.