Which of these is a type of mutation?
Multiplication
Substitution
Phenotype
Which scientist devised laws of inheritance?
Einstein
Mendel
Newton
What are alleles?
X-shaped lengths of DNA
A section of DNA that gives a characteristic
Alternative forms of the same gene
Why was Mendel's work not accepted during his lifetime?
It was published in a little-known journal
TV had not been invented
He did not want other people to know
Which of these is a correct pairing of DNA bases?
G-C
C-U
A-C
Which colour of eye is dominant?
Green
Blue
Brown
What does heterozygous mean?
One dominant and one recessive allele
Two dominant alleles
Two recessive alleles
Who devised the theory of evolution by natural selection?
Darwin
Wallace
What percentage of offspring have blue eyes from a cross between two heterozygous parents?
0
100
25
What percentage of offspring have blue eyes from a cross between two homozygous dominant parents?
75
50