bio

1. What is reproductive isolation?

6. Storyline Mascot -
Cheetah
⪢ While there is no real reproductive isolation between
cheetahs there is an issue:
○ The fact that the Cheetah reproduces at a very
slow rate is a huge concern.
○ Studies show that the males often suffer from a
low production of sperm.
○ This means even when they do mate there isn’t
always a high chance of young being created.
⪢ Source: Felineworlds.com
Sorry
ladies...

7. Random Forces
Lead to Genetic
Drift
● Genetic drift occurs when
there is a random change in
the allele frequencies within
a population.
● Alleles = different forms of
the same gene

9. This can create a
population bottleneck!

11. Go the classwork section and
complete the Actively
assignment: Genetic Drift

15. Distribution
● Genetic variation occurs
within a species due to the
different environmental
conditions throughout its
range.

17. Migration

20. Mutations
● A process in which DNA
sequences are randomly
changed
● Caused by many different
factors - environment,
mistakes in DNA replication,
etc.
● Leads to variation within a
species

21. Go the classwork section and
complete the Actively
assignment: Mutations

23. Factor? Impact on Survival?
Reproductive Isolation
Genetic Drift
Geography
Distribution
Mutations

24. How would each
factor above cause
the extinction or
survival of a
species?
Take a few moments and jot
down an explanation for each!

25. Click on the link when you’re ready to take
the quiz: Unit 4 - Week 2 Quiz
It’s QUIZ time!
You smarty pants will
have no trouble...Good
luck!
point Quiz