Page 81 - Science Course 2 (Book 1)

Sexual Reproduction Mo3-L3a: What is Sexual Reproduction?
Lesson 3

Zygote

the cell that forms when a sperm
In this topic, you will learn the following cell fertilizes an egg cell.
lessons:

Mo.3-L3a: What is Sexual Reproduction?
Mo.3-L3b: What are the Phases of Meiosis? Diploid
Mo.3-L3c: Why is Sexual Reproduction Important?
a cell that has pairs of chromosomes.

Diploid(2n)
Mo3-L3a What is Sexual Reproduction?
two sets of
chromosomes
KEY CONCEPTS:
1. What is sexual reproduction?

Haploid
Vocabulary A-Z a cell that has only one chromosome from each pair.

Let us learn some vocabulary Haploid(n)

one sets of
sexual reproduction chromosomes
type of reproduction in which the genetic material
from two different cells – a sperm and an egg –
combine, producing an offspring. homologous chromosomes
pairs of chromosomes that have genes for the same
traits arranged in the same order

Egg
the female reproductive, or sex,
cell; forms in an ovary.
Let’s Begin

Sperm What is Sexual Reproduction?
a male reproductive, or sex, Sexual reproduction is a type of reproduction in
cell; forms in a testis.
which the genetic materials from two different cells
combine, producing an offspring.

The female sex cell, an egg,
fertilization forms in an ovary.
a reproductive process in
which a sperm joins with an
egg Cytoplasm

Nucleus

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