Gene Expression and DNA Sequences Quiz
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Questions and Answers

What do genes specify?

  • The color of an organism's eyes
  • The sequence of nucleotides in DNA
  • Functional products, such as proteins (correct)
  • The number of chromosomes in an organism

What are genes?

  • Long, boring strings of nucleotides in DNA
  • Functional units in DNA that provide instructions for a molecule needed to perform a job in the cell (correct)
  • Structural components of chromosomes
  • Segments of RNA that help in protein synthesis

How does the sequence of nucleotides in DNA affect an organism's features?

  • By controlling the organism's behavior
  • By directly determining the physical characteristics of the organism
  • By providing instructions for functional products, such as proteins (correct)
  • By influencing the number of chromosomes in the organism

What is the functional product of many genes?

<p>Proteins (B)</p> Signup and view all the answers

What does a DNA molecule consist of?

<p>Functional units called genes (B)</p> Signup and view all the answers

What is the primary function of DNA in determining an organism's characteristics?

<p>Directing the production of proteins that contribute to the organism's features (C)</p> Signup and view all the answers

How does the sequence of nucleotides in DNA influence an organism's traits?

<p>By determining the sequence of amino acids in proteins, which affects the organism's characteristics (D)</p> Signup and view all the answers

In the context of genetic inheritance, what role does DNA play in determining the color of Mendel's pea plants' flowers?

<p>It encodes information for proteins involved in flower pigmentation (B)</p> Signup and view all the answers

Flashcards

Genes

Functional units in DNA that provide instructions for essential molecules.

Functional products of genes

Proteins that perform various jobs in the cell as specified by genes.

Sequence of nucleotides

Order of bases in DNA that dictates the genetic instructions for an organism.

Primary function of DNA

To direct the production of proteins that shape an organism's traits.

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Influence on traits

The nucleotide sequence determines amino acid sequence in proteins, affecting features.

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DNA in inheritance

DNA encodes information necessary for traits, such as flower color in pea plants.

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Proteins

Molecules produced by genes that carry out specific functions in the cell.

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Gene function in cells

Genes provide instructions for making functional products like proteins needed for cell jobs.

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