Learning Intention 2 Flashcards
To know how to define genes and chromosomes and to understand the difference between them (10 cards)
1
Q
What is a gene
A
a section of DNA that codes for specific traits or diseases
2
Q
What is a chromosome
A
DNA that is coiled around a histone
3
Q
What is a histone
A
a protein that the DNA is coiled around
4
Q
Example of a trait or disease that a gene can code for
A
eye colour or cystic fibrosis
5
Q
What is an allele
A
variations of the same gene
6
Q
Example of an allele
A
brown and blue eyes
7
Q
How many pairs of chromosomes do humans have
A
23 pairs
8
Q
What is a karyotype
A
an individual’s complete set of chromosomes
9
Q
What are chromatids
A
the two halves of a chromsome
10
Q
What is a telomere
A
a repetitive DNA sequence that serves to protect the ends of the chromosome
