SPECIAL SCIENCE FLASHCARDS
1
Q
A gene
A
is a section of DNA. Single genes determine inherited features such as eye colour.
2
Q
An allele
A
is a form of a gene. The alleles for eye colour could be blue or brown.
3
Q
homozygous condition.
A
Sometimes the two alleles are the same
4
Q
heterozygous condition.
A
Sometimes the two alleles are different
5
Q
The genotype
A
is the genetic make-up of an individual.
6
Q
The phenotype
A
is how the genotype shows itself. This is usually how a living thing appears.
7
Q
A dominant allele
A
will always show itself (even if there is only one dominant allele present).
8
Q
A recessive allele
A
is hidden if the dominant allele is present
9
Q
A gamete
A
is a sex cell. In animals the gametes are sperm and egg cells.
10
Q
A chromosome
A
is a linear arrangement of genes.
