DNA and Heredity

According to the Punnett Square, what is the percent probability that the parents will have heterozygous children.

• 100%

• 50%

• 25%

• 0%

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Crossing over in organisms is responsible for...?

• Dominance of genes

• Recombination of genes

• Linkage

• Segregation of alleles

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NGSS.HS-LS3-2

Which of the following best describes a DNA molecule?

• double helix

• contains ribose

• made of amino acids

• contains Uracil

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NGSS.HS-LS1-1

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine

• guanine

• thymine

• uracil

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NGSS.HS-LS1-1

Sections of DNA that have instructions for a specific trait are called _______________

• Blueprints

• Genes

• Heterozygous

• Fragments

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NGSS.HS-LS1-1

NGSS.HS-LS3-1

This is the passing of traits from parents to offspring?

• Mutation

• Heredity

• Environment

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NGSS.HS-LS3-1

What is the term for the physical appearance of an organism as a result of its genotype? (what it actually looks like)

• Phenotype

• Genotype

• Chromosome

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NGSS.HS-LS4-3

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What is heredity?

• The branch of biology the deals with heredity.

• The passing on of traits genetically from parents to offspring.

• The process of photosynthesis in plants

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the term for the genetic makeup of an organism? (the letters; TT, Tt, tt)

• Phenotype

• Genotype

• Allele

Why is it crucial that living things are able to replicate their DNA?

• Each cell must have its own DNA

• Less copies of DNA are needed when a new cell is created

• A cell needs multiple copies of DNA

• Only muscle cells need DNA 

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NGSS.HS-LS3-1