B1 - Topic 4 - Natural selection and genetic modification

Question 1

What is natural selection?

Answer 1

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Question 2

True or False: All individuals in a population are genetically identical.

Answer 2

False

Question 3

Fill in the blank: The main driving force behind evolution is __________.

Answer 3

natural selection

Question 4

What is meant by ‘survival of the fittest’?

Answer 4

‘Survival of the fittest’ refers to the idea that the individuals best suited to their environment are more likely to survive and reproduce.

Question 5

Multiple Choice: Which of the following is a mechanism of evolution? A) Mutation B) Gene flow C) Genetic drift D) All of the above

Answer 5

D) All of the above

Question 6

What role does variation play in natural selection?

Answer 6

Variation provides the raw material for natural selection by giving some individuals traits that enhance their survival and reproduction.

Question 7

True or False: Genetic modification involves altering the DNA of an organism.

Answer 7

True

Question 8

What are genetically modified organisms (GMOs)?

Answer 8

GMOs are organisms whose genetic material has been altered using genetic engineering techniques.

Question 9

Fill in the blank: The process of selecting organisms with desirable traits for breeding is called __________.

Answer 9

artificial selection

Question 10

Multiple Choice: Which of the following is an example of a trait that can be selected for in natural selection? A) Color B) Size C) Speed D) All of the above

Answer 10

D) All of the above

Question 11

What is the purpose of genetic modification in agriculture?

Answer 11

The purpose of genetic modification in agriculture is to enhance crop yields, improve resistance to pests and diseases, and increase nutritional value.

Question 12

True or False: Natural selection can lead to the formation of new species over time.

Answer 12

True

Question 13

What is the role of mutations in evolution?

Answer 13

Mutations introduce new genetic variations, which can be beneficial, harmful, or neutral, and are a source of genetic diversity.

Question 14

Fill in the blank: The study of how traits are passed from parents to offspring is called __________.

Answer 14

genetics

Question 15

name 5 subcellular structures found in animal cells

Answer 15

nucleus, cytoplasm, cell membrane, mitochondria, ribosomes