Reproduction

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Reproduction
2
Vocabulary

• Fertilization joining of a sperm and an egg
  cell
• Gamete sex cell (sperm or egg)
• Genes DNA that determines your traits
• Meiosis - cell division to produce gametes with
  ½ the number of chromosomes

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Vocabulary

• Mitosis cell division to produce cells with a
  full set of chromosomes
• Offspring new individuals produced as a result
  of reproduction
• Zygote fertilized egg

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Reproductive SystemFunction produces
_____________ (sex cells)and offspring
Gametes

• Ensures the survival of the ____________
• Sexual reproduction
• A. requires ____parents
• B. ______the genes are obtained from each parent
• C. offspring are not ____________ to either
  parent due to inheriting _________ from both
  parents

species
2
1/2
Identical
Genes/DNA
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Organs

• A. Male
• 1. Testes produce _______
• B. Female
• 1. Ovaries produces ______
• 2. Oviduct (______________ ) where the egg is
  _______________
• 3. Uterus lined with _____________where the
  zygote (_____________ ) attaches and
  ______________

Sperm
Egg
Fallopian Tubes
Released/ Fertilized
Thick muscular walls
Fertilized egg
Develops
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Gametes

• Sperm
• A. __________ sex cell
• B. contains _____ chromosomes
• Egg
• A. ____________ sex cell
• B. contains ______ chromosomes

Male
23
Female
23
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Meiosis

• Cell division used to produce ____________
• Produces cells with _______ the genetic
  information
• Produces _______ sperm cells or ______ egg cell

Gametes (sex cells)
1/2
4
1
8
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Fertilization
Sperm

• Joining of a ___________ and an _________ cell
• Produces a ____________ with 46 chromosomes (23
  pairs)
• Occurs in the __________ of the female (internal
  fertilization)
• If the egg does not become fertilized in the
  oviduct then it passes out of the body and
  __________________ begins

Egg
Zygote
Oviduct
Menstruation
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Development After Fertilization

• Zygote undergoes mitosis cell division as it
  travels down the _____________and attaches to the
  _____________
• Once attached to the uterus the _______________
  forms to exchange __________, ______________ and
  __________ between the baby and mother
• The baby is attached to the placenta by the
  _______________
• Embryo during the first _____ weeks of
  development
• Fetus from eight weeks to _______________
• Gestation period pregnancy

Oviducts
Uterus (Implantation)
Placenta
Wastes
Nourishment
Protection
Umbilical cord
7
9 months
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A. Sperm
B. Egg
C. Fertilization
D. Zygote
E.- G. Mitosis
Sperm and Egg are produced by Meiosis
Proof that Fertilization has occurred is that
there are twice as many chromosomes in the zygote
than there are in the egg or sperm cell alone
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Review

• Review Potential and Kinetic Energy