3.1.1: Types of Reproduction

Question 1

Sexual reproduction is:

Answer 1

The process involves the fusion of the nuclei of two gametes to form a zygote (fertilized egg cell) and the production of offspring that are genetically different from each other

Question 2

Fertilization is defined as:

Answer 2

the fusion of gamete nuclei, and as each gamete comes from a different parent, there is variation in the offspring

Question 3

What is a gamete

Answer 3

A gamete is a sex cell (in animals: sperm and ovum; in plants: pollen nucleus and ovum

Question 4

In human beings, a normal body contains how many chromosomes?

Answer 4

46 chromosomes

Question 5

When the male and female gametes fuse, what do they become?

Answer 5

A Zygote (fertilised egg cell)

Question 6

Name 3 advantages to Sexual Reproduction

Answer 6

1: Increases Genetic Variation

Question 7

Name 2 Disadvantages

Answer 7

1: Takes time and energy to find mates

Question 8

Asexual reproduction is:

Answer 8

The process results in genetically identical offspring being produced from one parent

Question 9

Asexual reproduction does not involve:

Answer 9

does not involve gametes or fertilization

Question 10

How many parents are there needed:

Answer 10

Only one parent is required so there is no fusion of gametes and no mixing of genetic information

Question 11

As a result of asexual reproduction, the offspring are genetically

Answer 11

genetically identical to the parent

Question 12

Many plants reproduce via:

Answer 12

Many plants reproduce via asexual reproduction

Question 13

Bacteria produce exact genetic copies of themselves in a type of asexual reproduction called:

Answer 13

binary fission

Question 14

What are the advantages to asexual reproduction:

Answer 14

2. Can exploit suitable enviroments quickly.

Advantages:
#1. Population can be increased rapidly when conditions are right.

Question 15

What are the disadvantages to asexual reproduction:

Answer 15

1. Limited genetic variation in population - offspring are genetically identical to their parents.

Disadvantages:

Question 16

Name some key differences between asexual, and sexual reproduction.

Answer 16

1. The number of parent organisms

The key differences between sexual and asexual reproduction include: