Back to the lesson and practice
ActivityPractice worksheet
Do it🖨️ On paper✏️ On screen
New copyMake a new one

Works with a finger, a stylus or a mouse. Nothing is saved or sent anywhere.

Write your answers with a finger, mouse or stylus. Switch to Scroll to move around the page. A stylus always writes.

eurekami

Use twins and clones to separate genes from environment

8th grade (Year 9 in England) · 16 questions · Common Core: NGSS.MS-LS1-5, NGSS.MS-LS3-2, NGSS.SEP 7 · England: KS3 Biology: Inheritance, chromosomes, DNA and genes, GCSE Combined Science: Inheritance, variation and evolution

Name

Date

Score/ 16

  1. Question 1

    Cuttings from one geranium plant (clones with identical genes) were grown in sun and in shade. Mean height after 8 weeks: sun 38 cm, shade 26 cm. What can you conclude?

    • A. Height is controlled only by genes.
    • B. The results show light has no effect.
    • C. The difference in height was caused by the environment (light).
    • D. The plants in the shade had different genes.

  2. Question 2

    Two rabbits from the same litter are fed different diets and grow to different sizes. Why can we not be sure the difference is only due to diet?

    • A. Brothers and sisters do not have identical genes
    • B. Diet never affects size
    • C. The rabbits are clones
    • D. Rabbits do not have genes

  3. Question 3

    Genes and environment: which statement is NOT true?

    • A. Blood group is changed by diet.
    • B. Differences between identical twins are caused by the environment.
    • C. A suntan is caused by the environment.
    • D. Clones have identical genes.

  4. Question 4

    Cuttings from one geranium plant (clones with identical genes) were grown in sun and in shade. Mean height after 8 weeks: sun 45 cm, shade 27 cm. What can you conclude?

    • A. The plants in the shade had different genes.
    • B. Height is controlled only by genes.
    • C. The results show light has no effect.
    • D. The difference in height was caused by the environment (light).

  5. Question 5

    Two rabbits from the same litter are fed different diets and grow to different sizes. Why can we not be sure the difference is only due to diet?

    • A. Brothers and sisters do not have identical genes
    • B. The rabbits are clones
    • C. Rabbits do not have genes
    • D. Diet never affects size

  6. Question 6

    Genes and environment: which statement is NOT true?

    • A. Height depends on both genes and environment.
    • B. Identical twins always have identical body mass.
    • C. Clones have identical genes.
    • D. Differences between identical twins are caused by the environment.

  7. Question 7

    Cuttings from one geranium plant (clones with identical genes) were grown in sun and in shade. Mean height after 8 weeks: sun 50 cm, shade 38 cm. What can you conclude?

    • A. The difference in height was caused by the environment (light).
    • B. Height is controlled only by genes.
    • C. The plants in the shade had different genes.
    • D. The results show light has no effect.

  8. Question 8

    Two rabbits from the same litter are fed different diets and grow to different sizes. Why can we not be sure the difference is only due to diet?

    • A. Rabbits do not have genes
    • B. The rabbits are clones
    • C. Brothers and sisters do not have identical genes
    • D. Diet never affects size

  9. Question 9

    Genes and environment: which statement is NOT true?

    • A. Blood group is changed by diet.
    • B. A suntan is caused by the environment.
    • C. Height depends on both genes and environment.
    • D. Clones have identical genes.

  10. Question 10

    Cuttings from one geranium plant (clones with identical genes) were grown in sun and in shade. Mean height after 8 weeks: sun 46 cm, shade 26 cm. What can you conclude?

    • A. The difference in height was caused by the environment (light).
    • B. The plants in the shade had different genes.
    • C. Height is controlled only by genes.
    • D. The results show light has no effect.

  11. Question 11

    Why are identical twins so useful in studying variation?

    • A. They always live in the same house
    • B. They have no genes
    • C. They never vary at all
    • D. They have the same genes, so differences must be environmental

  12. Question 12

    Genes and environment: which statement is NOT true?

    • A. Blood group is changed by diet.
    • B. A suntan is caused by the environment.
    • C. Differences between identical twins are caused by the environment.
    • D. Clones have identical genes.

  13. Question 13

    Cuttings from one geranium plant (clones with identical genes) were grown in sun and in shade. Mean height after 8 weeks: sun 44 cm, shade 31 cm. What can you conclude?

    • A. The difference in height was caused by the environment (light).
    • B. Height is controlled only by genes.
    • C. The plants in the shade had different genes.
    • D. The results show light has no effect.

  14. Question 14

    Why are identical twins so useful in studying variation?

    • A. They never vary at all
    • B. They have the same genes, so differences must be environmental
    • C. They have no genes
    • D. They always live in the same house

  15. Question 15

    Genes and environment: which statement is NOT true?

    • A. A suntan is caused by the environment.
    • B. Height depends on both genes and environment.
    • C. Differences between identical twins are caused by the environment.
    • D. Identical twins always have identical body mass.

  16. Question 16

    Cuttings from one geranium plant (clones with identical genes) were grown in sun and in shade. Mean height after 8 weeks: sun 49 cm, shade 31 cm. What can you conclude?

    • A. The plants in the shade had different genes.
    • B. The difference in height was caused by the environment (light).
    • C. The results show light has no effect.
    • D. Height is controlled only by genes.

Write your answers right on the page. · Free from eurekami.com

All done? Check your answers
  1. The difference in height was caused by the environment (light).
  2. Brothers and sisters do not have identical genes
  3. Blood group is changed by diet.
  4. The difference in height was caused by the environment (light).
  5. Brothers and sisters do not have identical genes
  6. Identical twins always have identical body mass.
  7. The difference in height was caused by the environment (light).
  8. Brothers and sisters do not have identical genes
  9. Blood group is changed by diet.
  10. The difference in height was caused by the environment (light).
  11. They have the same genes, so differences must be environmental
  12. Blood group is changed by diet.
  13. The difference in height was caused by the environment (light).
  14. They have the same genes, so differences must be environmental
  15. Identical twins always have identical body mass.
  16. The difference in height was caused by the environment (light).