Topic 2 Lesson 2

Multiple Choice

Which scientist's ideas helped scientists understand that genes are segments of code found on chromosomes?

• Charles Darwin

• Gregor Mendel

• Louis Pasteur

• James Watson

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​4

​3

​2

​1

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Multiple Choice

Which of the following correctly shows the relationship from cell to gene as depicted in the diagram?

• Cell → Nucleus → Chromosome → DNA → Gene

• Cell → Chromosome → Nucleus → DNA → Gene

• Gene → DNA → Chromosome → Nucleus → Cell

• Nucleus → Cell → Chromosome → Gene → DNA

Multiple Choice

Why do sex cells contain only half the number of chromosomes compared to body cells?

• Because they combine during fertilization to restore the full number

• Because they are smaller than body cells

• Because they do not have a nucleus

• Because they do not contain DNA

Multiple Choice

A pedigree is used to map out the inheritance of traits in a family. Which symbols represent males and females in a pedigree chart?

• Squares represent males, circles represent females

• Circles represent males, squares represent females

• Triangles represent males, circles represent females

• Squares represent females, circles represent males

Fill in the Blanks

Meiosis forms sex cells, while mitosis forms

cells.