Chapter 12: Reproduction

Question 1

What are the two types of reproduction?

Answer 1

Sexual and Asexual

Question 2

What are the characteristics of sexual reproduction?

Answer 2

• two parents
• fusion of male and female gametes to form a zygote
• characteristics combination of both parents
• leads to genetic variation
• gametes formed by meiosis, zygote divides by mitosis

Question 3

What are the characteristics of asexual reproduction?

Answer 3

• 1 parent involved
• no gametes
• no fusion
• mitosis
• no variation

Question 4

What is DNA?

Answer 4

DNA is a chemical found in the nucleus of cells.
It is a polymer made up of two strands joined together.
The structure of DNA is a double stranded, double helix

Question 5

What is a chromosome?

Answer 5

A chromosome is a molecule which contains the DNA

Question 6

What is a gene?

Answer 6

Genes are section of chromosomes, they are a code of DNA

Question 7

What is a allele?

Answer 7

For every single gene there is two pairs, one from sperm one from egg.

Question 8

What is a genome?

Answer 8

A genome is all the genes of an organism (genetic material)

Question 9

What is a protein?

Answer 9

Long strands of amino acids

Question 10

What is a Mitochondria?

Answer 10

The powerhouse of the cell, it allows aerobic respiration to take place. It contains a small amount of DNA