Document 1501787

Name
Date
Reproduction of Organisms
Why do living things reproduce?
Before You Read
Before you read the chapter, think about what you know about why living things reproduce. In the
first column, share three things you already know about this topic. In the second column, identify
three things that you would like to learn more about. When you have completed the chapter, think
about what you have learned and complete the What I Learned column.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
K
What I Know
W
What I Want to Learn
L
What I Learned
Chapter Vocabulary
Lesson 1
Lesson 2
NEW
NEW
sexual reproduction
egg
sperm
fertilization
zygote
diploid
homologous
chromosomes
haploid
meiosis
asexual reproduction
fission
budding
regeneration
vegetative reproduction
cloning
ACADEMIC
potential
REVIEW
DNA
Reproduction of Organisms
33
Lesson 1
Sexual Reproduction and Meiosis
Scan Lesson 1. Then write three questions you have about sexual reproduction in your
Science Journal. Try to answer your questions as you read.
Model the process of sexual reproduction. Complete the
diagram using these labels:
What is sexual
reproduction?
I found this on page
.
• egg
• sperm
Mother
• fertilization
• zygote
Father
Detail the relationship between diploid cells and homologous
Diploid Cells
I found this on page
.
Define haploid cells, and explain how they are produced.
Haploid Cells
I found this on page
34
chromosomes.
.
Reproduction of Organisms
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
New organism
Lesson 1 | Sexual Reproduction and Meiosis (continued)
The Phases of Meiosis
I found this on page
Model the stages of meiosis I. Draw and describe each stage.
.
Stage of
Meiosis I
Drawing
Description
Prophase I
Metaphase I
Anaphase I
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Telophase I
I found this on page
.
Model the stages of meiosis II. Describe each stage.
Stage of
Meiosis II
Description
Prophase II
Metaphase II
Anaphase II
Telophase II
Reproduction of Organisms
35
Lesson 1 | Sexual Reproduction and Meiosis (continued)
Why is meiosis
important?
I found this on page
Summarize the importance of meiosis.
.
Maintains
diploid cells
by
Creates
haploid cells
that
help
1.
2.
I found this on page
.
Mitosis has
division of
nucleus
daughter cells
produced
36
Reproduction of Organisms
Both
have
parent cell
Meiosis has
divisions of
nucleus
daughter cells
produced
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Compare and contrast meiosis and mitosis and cell division.
How do mitosis and
meiosis differ?
Lesson 1 | Sexual Reproduction and Meiosis (continued)
Advantages of Sexual
Reproduction
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Explain why genetic variation and selective breeding are
advantages of sexual reproduction.
.
Advantage
Explanation
Genetic
variation
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Selective
breeding
Disadvantages of Sexual
Reproduction
Identify two main disadvantages of sexual reproduction.
I found this on page
1.
.
2.
Explain how the process of meiosis relates to the way in which a child
resembles but is not an exact copy of his or her parents.
Reproduction of Organisms
37