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8th grade · Science · Unit 5 of 8

Genes & Heredity

Genes, mutations and reproduction.

What your child practices

Practices how genes on chromosomes code for proteins that shape traits, how mutations can be harmful, helpful or neutral, and how sexual and asexual reproduction differ in passing on genes.

California Content Standards learning standard: MS-LS3-1; MS-LS4-5 · genes and mutations, and technologies that influence inheritance

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Mutations can be…

    • always harmful
    • always helpful
    • harmful, helpful or neutral
    • never inherited

  2. Question 2

    A mutation is…

    • a type of food
    • a kind of rock
    • a change in DNA
    • a new cell wall

  3. Question 3

    A recessive trait shows only when…

    • the parent is older
    • two recessive alleles are present
    • one dominant allele is present
    • it is cold

  4. Question 4

    A Punnett square helps predict…

    • plant height from water
    • earthquakes
    • possible genetic outcomes of offspring
    • weather

  5. Question 5

    Genes are found on…

    • chromosomes
    • ribosomes
    • mitochondria only
    • cell walls

  6. Question 6

    A mutation changes a protein so it no longer works. The effect is most likely…

    • always neutral
    • no effect on traits
    • helpful
    • harmful

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