Biology 6.2.2

Question 1

In any Environment, which Individuals are the ones that are Most Likely to Survive & Reproduce?

Answer 1

In any Environment, the Individuals that Have the best Adaptive Features are the ones Most Likely to Survive & Reproduce.

Question 2

In any Environment, the Individuals that Have the best Adaptive Features are the ones Most Likely to Survive & Reproduce. What does this Lead to?

Answer 2

Natural Selection.

Question 3

What Happens when Organisms Reproduce?

Answer 3

When Organisms Reproduce, they Produce More Offspring than the Environment is Able to Support.

Question 4

Individuals in a Species Show a Range of Variation, Caused by: (2)

Answer 4

-Differences in Genetic Factors.

-Differences in Environmental Factors.

Question 5

When Organisms Reproduce, they Produce More Offspring than the Environment is Able to Support. What does this Lead to?

Answer 5

This Leads to Competition for Food, & Other Resources that are Necessary for Survival. This Results in a ‘Struggle for Survival’.

Question 6

Individuals with Characteristics that are Most ___ to the ___ have a ___ Chance of Survival, & More Chances to ___.

Answer 6

Suited, Environment, Higher, Reproduce.

Question 7

Individuals with Characteristics that are Most Suited to the Environment have a Higher Chance of Survival, & More Chances to Reproduce. What does this Lead to?

Answer 7

Therefore, the Alleles that Caused these Characteristics are Passed on to their Offspring, at a Higher Rate than those with the Characteristics that were Less Suited to Survival in the Environment.

Question 8

What Can you Say About Each New Generation, as Natural Selection is Constantly Going On?

Answer 8

As Natural Selection is Constantly Going On, Each Generation Will be Better Suited to Survival in that Environment than the Previous Generations.

Question 9

Who was the Theory of Natural Selection put forward by? What did the Theory become Known as?

Answer 9

Charles Darwin. ‘Survival of the Fittest’.

Question 10

At what Point is a New Species Formed?

Answer 10

If 2 Populations of One Species Become so Different in Phenotype (via Natural Selection, Evolution) that they can No Longer Interbreed to Produce Fertile Offspring, they have Formed 2 New Species.