B17 Chromosomes and Genes

Question 1

Inheritance

Answer 1

the transmission of genetic information from generation to generation

Question 2

Chromosome

Answer 2

a thread of DNA made up of a string of genes. They carry information, which controls how your body works and what you look like

Question 3

Gene

Answer 3

a length of DNA that is the unit of heredity and codes for a specific protein. A gene may be copied and passed on to the next generation

Question 4

Allele

Answer 4

any of the two or more alternative forms of a gene

Question 5

Haploid nucleus

Answer 5

a nucleus containing a single set of unpaired chromosomes (e.g. sperm and egg)

Question 6

Diploid nucleus

Answer 6

a nucleus containing two sets of chromosomes (e.g. in body cells)

Question 7

DNA

Answer 7

What makes up chromosomes, and is a chemical that stores coded instructions.

Question 8

Determining the sex of a mammal

Answer 8

Female- possesses 2 X chromosomes and is XX

Male- possesses 1 X and 1 Y chromosome and is XY