Chapter 7 Section 2: Sexual vs. Asexual Reproduction
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Asexual Reproduction
o Reproductive processes that do not involve the union of individuals or
__________________ .
o Occurs in most __________________, __________________, protists, and low
__________________.
o __________________ parent!
o Offspring are __________________ to the parents.
Advantages of Asexual Reproduction
o __________________ to reproduce asexually!
o Requires less __________________!
o Able to reproduce large numbers very __________________ in the right
environment.
Disadvantages of Asexual Reproduction
o Less ____________________________________!
 Why is this bad?
 If there is a negative genetic __________________ in the
organism  all the offspring will have this mutation, which may
be __________________.
Types of Asexual Reproduction
o __________________ – organism uses cell division to __________________
body parts.
o __________________ __________________ – process by which a parent
prokaryotic organism (lacking a nucleus) copies its DNA and splits into two new
__________________ cells.
 The daughter cells are __________________ to their parent cell.
o __________________ – a form of asexual reproduction that a new organism
develops as an __________________ or bud from another organism.
 The bud stays attached to the parent and continues to grow until it reaches
__________________.
 Then __________________ off.
o Vegetative Propagation is a form of asexual reproduction in
__________________.
 Different types of vegetative propagation:
o __________________
o __________________
o __________________
o __________________
 Runners – stems which grow at the soil __________________ or
just below ground that form __________________ roots at the
nodes, and new plants from the buds.
 Tubers – plant structures that are used for __________________
storage for winter and dry periods.
o These structures can develop into __________________
__________________ under certain conditions.
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o Cloning - is the process of producing similar populations of genetically
__________________ individuals that occurs in nature when organisms such as
bacteria, insects or plants reproduce __________________.
Sexual Reproduction
o Offspring are a combination of __________________ parents therefore different
from each parent.
Advantages of Sexual Reproduction
o Variety and/or __________________ of offspring (color, shape, size, intelligence,
ability, etc…)
o More able to adapt to environmental __________________.
Disadvantages of Sexual Reproduction
o Sometimes traits needed for __________________ are not passed on.
o __________________ must be consumed.
o Much __________________.
o Very few __________________ are produced at one time.
o __________________ can occur.
Sexual Reproduction in Plants
o __________________ is the sexual reproduction of plants.
o Male gamete = __________________ – produced in __________________
o Female gamete = __________________ – produced in __________________
Sexual Reproduction in Animals
o Male gametes (__________________ ) produced in the __________________ .
o Female gametes (__________________ ) produced in __________________ .
o After fertilization, a __________________ is produced.
o The zygote develops into an __________________ .