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NCSCOS Grade 7 Life Science - 7.L.2 Diagnostic Genetics

Quiz by GADOE

Grade 7
Science
North Carolina Standard Course of Study

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Measures 3 skills from
Grade 7
Science
North Carolina Standard Course of Study

7.L.2.1
7.L.2.2
7.L.2.3

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10 questions
Show answers
  • Q1
    Which is an advantage of sexual reproduction?
    offspring receives its DNA from one parent and is identical to that paren
    offspring grows faster than one that is produced asexually.
    Time and energy is used to find a mate in the population
    increased genetic diversity within the population
    30s
    7.L.2.1
  • Q2
    What is a characteristic of offspring by ASEXUAL reproduction?
    Offspring are identical to parent
    Requires two parents for reproduction
    Offspring are different from parent
    Time and energy required for mating
    30s
    7.L.2.1
  • Q3
    In piranha, fish with large teeth represent the dominant trait. Because the dominant trait masks the recessive trait,, we could expect about ________ of the next generation of fish to have SMALL teeth.
    Question Image
    50%
    75%
    0%
    25%
    30s
    7.L.2.2
  • Q4
    In this Punnett square used to predict genetic crosses, RR represents the _________ of the organism.
    Question Image
    phenotype
    appearance
    genotype
    recessive
    30s
    7.L.2.2
  • Q5
    Allele A is dominant in mice and allele a is recessive. Two mice with the gene combination Aa breed and produce four offspring as shown below. Which offspring has the recessive phenotype?
    Question Image
    2
    4
    3
    1
    30s
    7.L.2.2
  • Q6
    Why does sexual reproduction result in more genetic diversity than asexual reproduction?
    Offspring come from identical parents.
    Traits from two parents are combined
    Offspring grow in different environments.
    More organisms reproduce this way.
    30s
    7.L.2.2
  • Q7
    What is the main purpose of a pedigree chart?
    Question Image
    to diagnose genetic disorders
    to map genes
    To determine how a genetic trait is inherited through generations
    to predict offspring ratio
    30s
    7.L.2.2
  • Q8
    Which of these is a homozygous dominant genotype?
    AA
    Aa
    aaA
    aa
    30s
    7.L.2.2
  • Q9
    Which of these is an example of a phenotype?
    blue eyes
    bb
    Bb
    B
    30s
    7.L.2.2
  • Q10
    Which statement MOST accurately describes the influences on a person’s length of life and quality of life?
    Genes alone determine both the length and quality of life
    Behaviors alone determine both the length and quality of life
    Neither genes nor behaviors influence the length or quality of life
    Both behaviors and genes influence the length and quality of life
    30s
    7.L.2.3

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