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10 Cards in this Set
- Front
- Back
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Zygote |
The first cell of an organism after a sperm fertilises the egg. |
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Nucleus |
Structure within a cell which contains the chromosomes. |
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Dominant |
A gene which will always be expressed |
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Chromosomes |
Long, thread-like structures which carry genes |
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Gene |
An inherited object which determines appearance of a trait |
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DNA |
The molecules which chromosomes are made of |
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Trait |
Feature of an organism which is determined by genes |
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Double Helix |
The shape which two DNA molecules form |
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Heterozygous |
Occurs when the two genes inherited for a trait are different |
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Recessive |
A gene which will only be expressed if 2 copies are inherited |
