Untitled Presentation

Open Ended

Why is it important that gamete cells have only one set of chromosomes?

Multiple Choice

This plant called Mother of Thousands has leaves that asexually reproduce by the edges dropping off and maturing into new plants. The cells of the offspring would have

• Half the genetic information of the parent cell.

• Twice as much genetic information as the parent cell.

• The same genetic information as the parent.

• Incomplete genetic information

Multiple Choice

Fruit fly body cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have -

• 16 chromosomes.
• 46 chromosomes.
• 8 chromosomes.
• 4 chromosomes.

Multiple Choice

What is the process shown in the image?

• Mitosis

• Meiosis

• Binary Fission

• Cell Division

Multiple Choice

Sea turtles have 56 chromosome in their somatic cells. How many chromosomes are in their gametes?

• 28

• 56

• 112

• 46

Multiple Choice

In which stage of MEIOSIS does crossing over occur? (The exchange of genetic material between chromosomes in a tetrad.)

• Anaphase I

• Metaphase I

• Prophase I

• Telophase I

Multiple Choice

What is the unique characteristic of chromosome number in body cells?

• It varies among organisms

• It is the same for all cells in an organism

• It is different for sex cells

• It is not important for organisms

Multiple Choice

What is the chromosome number in sex cells after meiosis?

• 46

• 23

• 12

• 22

Multiple Choice

What is the total number of chromosomes in the fertilized egg (zygote) after the fusion of the egg and sperm?

• 46

• 92

• 23

• 69

Multiple Choice

What are homologous chromosomes and how do they differ from non-homologous chromosomes?

• They are identical chromosomes from both parents

• They look alike and code for the same traits

• They are chromosomes that do not pair up

• They are chromosomes that only come from one parent

Open Ended

Explain how crossing over during meiosis contributes to genetic variation among siblings.

Multiple Choice

What is the main difference between mitosis and meiosis as illustrated in the images?

• Mitosis results in identical daughter cells

• Meiosis results in identical daughter cells

• Mitosis involves crossing over

• Meiosis occurs only in somatic cells

Multiple Choice

What process is involved in the production of gametes in adult females and males?

• Mitosis

• Meiosis

• Fertilization

• Cell division

Fill in the Blanks

Human body cells (somatic cells) have 46 chromosomes in them. How many chromosomes are in the sex cells (gametes) of humans?

Multiple Choice

Which of the following is a difference between mitosis and meiosis?

• Mitosis results in four daughter cells, meiosis results in two

• Mitosis involves one division, meiosis involves two

• Mitosis occurs in gametes, meiosis occurs in somatic cells

• Mitosis reduces chromosome number, meiosis maintains it

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident