Reproduction Biology
Reproduction ensures the continuation of species. Organisms reproduce sexually (combining genetic material from two parents) or asexually (producing genetically identical offspring from one parent).
What You Need to Know
Key Concept Diagram
Asexual reproduction produces genetically identical offspring (clones) from a single parent
Sexual reproduction involves the fusion of gametes, producing offspring with genetic variation
Meiosis produces gametes (sex cells) with half the normal chromosome number
Genetic variation from sexual reproduction is important for the survival of species in changing environments
Key Vocabulary
Asexual reproduction
Reproduction involving a single parent, producing genetically identical offspring
Sexual reproduction
Reproduction involving two parents whose gametes fuse to produce genetically varied offspring
Gamete
A sex cell (egg or sperm) produced by meiosis, containing half the chromosome number
Meiosis
Cell division that produces four genetically different cells, each with half the chromosome number
Knowledge Check
Select the correct answer for each question. Click "Check Answer" to see if you are right.
Question 1
A strawberry plant produces runners that grow into new plants. This is an example of:
Question 2
Why is genetic variation produced by sexual reproduction important for a species?
Question 3
How many chromosomes does a human gamete contain?
Key Concepts Summary
- ●Asexual reproduction produces genetically identical offspring (clones) from a single parent
- ●Sexual reproduction involves the fusion of gametes, producing offspring with genetic variation
- ●Meiosis produces gametes (sex cells) with half the normal chromosome number
- ●Genetic variation from sexual reproduction is important for the survival of species in changing environments