1
Q
how does natural selection work?
A
individuals with certain inherited traits survive specific local environmental conditions and, through reproduction, pass their alleles on to their offspring
2
Q
Natural selection only occurs if there is ______ within a population.
A
genetic diversity
3
Q
examples of selective pressure (4)
A
- temperature change
- light level change
- change in predators
- change in competition
4
Q
example of artificial selection
A
chicken bred to produce more eggs
5
Q
what are the downsides to artificial selection
A
- decreases genetic diversity in a population, which makes the population less fit for environmental changes and natural selection
- monocultures prone to environmental change
SBI3U
flashcards
Decks in class (15)
# Cards
-
Chapter 1: Diversity Of Living Things26
-
Chapter 2: Diversity– From Simple to Complex26
-
Chapter 3: Multicellular Diversity38
-
Chapter 3.1: Algae Evolution0
-
Chapter 4: Genetic Processes38
-
Chapter 4.1: Mitosis23
-
Chapter 4.2: Meiosis17
-
Chapter 5: Patterns of Inheritance24
-
Chapter 6: Complex Patterns of Inheritance10
-
Chapter 7: Introducing Evolution12
-
Chapter 8: Developing a Theory of Evolution15
-
Chapter 8.1: Scientific Contributions to Evolution9
-
Chapter 8.2: Sources of Evidence for Evolution5
-
Chapter 7.1: Adaptation and Variation5
-
Chapter 9: Mechanisms of Evolution and their effect on Populations20
