UNIT 6: Cellular Division Biology I DAYSHEET 76: Meiosis Review & Summative Assessment Name _____________________________________ Date: __________

Catalyst/Bellringer: Most Missed Questions from Thursday’s Formative Assessment

Activity 1: Meiosis vs Mitosis Cram Session

Characteristic Mitosis Meiosis

What is it used for?

1. 2. 3.

What happens before the cell divides?

What does it look like?

How many times does the cell divide?

How many daughter cells are made?

Advantages

Disadvantages

 

   

Activity 2: Time to Review! Activity 3: Calculating Chromosome Number

Characteristic Mitosis Meiosis

Does it make cells that are haploid or

diploid?

Does it make cells that are 1N or 2N?

Does it make cells

that are identical or different?

Where does it

happen in people?

Mistakes can

cause…

Identify if the following are associated with mitosis (MI) or meiosis (ME) Identical _________________ Somatic Cells_________________ Different__________________ Gametes _________________ Haploid___________________ Sexual Reproduction _________________ Diploid___________________ Asexual Reproduction _________________ 2N______________________ Crossing Over________________ 1N_______________________ Growth ________________ Repair ________________

Activity 2: Math Revisited

1. How many chromosomes are in a human body cell? ___________

2. How many chromosomes are in a human gamete (sperm or egg)? ___________

3. In apple trees, the haploid ovum contains 30 chromosomes. How many chromosomes will be in the fertilized zygote?

4. Buffalo have 32 chromosomes in each somatic cell. If a cow cell undergoes meiosis, how many chromosomes should be in each gamete?

5. If a polar bear receives 25 chromosomes from its father’s sperm, how many chromosomes will be present in the fertilized polar bear zygote?

6. Each oxen haploid cell contains 38 chromosomes. How many chromosomes does an oxen’s heart cell contain?

7. A bullfrog egg cell contains 7 chromosomes. How many chromosomes are found in a bullfrog’s muscle cell?

8. Flesh-eating bacteria, Necrotizing fasciitis, reproduce asexually. If a mature bacterium containing 5 chromosomes undergoes asexual reproduction, how many chromosomes will be in its offspring?

Homework 76: Reproduction Active Reading Biology I Name: ________________________________ Date: ______________ Directions: Use your reading strategies (underline, highlight and/or circle) for the passge on sexual reproduction below. Then answer the review questions on the back of the page.