Adaptions And Variations

Question 1

How do adaptions develop?

Answer 1

Through variation ~ differences in people which may be structural, behavioural or physiological.
Genetic variation is due to genetic differences in a population.

Question 2

What does genetic variation exist because off?

Answer 2

A) random mutations that can be inherited
B) recombination of alleles in sexual reproduction.

Question 3

Mutations

Answer 3

• Mutations are not always bad
• environmental factors can make mutations occur or they can occur randomly during DNA replication.
  -mutations often provide new alleles in species.
• gamete mutations form inherited mutations that affect future generations.
• they can have no affect, be beneficial or be harmful depending on the organisms condition/environment.

Question 4

Variation and adaptions → the connection

Answer 4

• Environmental conditions determine if a variation has a negative, positive or no impact on an individuals ability to survive and reproduce.
• helpful variations will be more likely to survive and reproduce and pass on their DNA to future generations u based on their environmental factors.

Question 5

Variation and adaptions → the connection (part2)

Answer 5

• The variation becomes more common in upcoming generations considering it a beneficial trait, it will become an adaption of the population.
• individuals without the adaption often do not survive, they wont be able to reproduce so their genes do not remain in the population.

Question 6

Selective advantage

Answer 6

~ when a genetic mutation leads to variation that is helpful and gives an individual a genetic advantage for survival and reproduction.