B1.8 Genes (Topic 1) Flashcards
1
Q
What is cell membrane?
A
Thin layer around a cell that controls what goes into and out of a cell.
2
Q
What is cytoplasm?
A
Jelly-like part inside a cell where the cells activities happen.
3
Q
What is DNA?
A
Deoxyribose nucleic acid. Chemical that makes up genes and chromosomes; the instructions for a cell’s growth and activity.
4
Q
What is a chromosome?
A
A long thread of a molecule called DNA. Each chromosome contains a series of genes along its length.
5
Q
What are genes?
A
A section of DNA that carries the instructions for a characteristic.
6
Q
What is inherited variation?
A
Variation caused by genes.
7
Q
What are alleles?
A
Every gene comes in different types of alleles. So a gene for eye colour may come in a ‘blue type’ allele and a ‘brown type’ allele.
