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Definition
Sections of DNA moved onto a different chromosome.
(a chromosome mutation) |
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Definition
Section of a DNA 'turned around'
(chromosome mutation) |
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Definition
Section of DNA 'cut out' and lost
(chromosome mutation) |
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Definition
Extra DNA added to the chromosome
(chromosome mutation) |
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Term
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Definition
It either has it or is doesn't. Examples:
Eye colour, attached/not attached earlobes
These characteristics are qualitative (cannot be measured) and are not affected by the environment, only by genes. |
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Term
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Definition
Can be a range of things. Examples:
Height, foot size.
These characteristics are quantitative (they can be measured) and can be affected by the environment as well as several genes. |
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Term
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Definition
| Genes that are valuable to humans are identified and removed from the animal or plant then are transferred to another organism (usually one that grows rapidly) which then 'reads' the received gene and shows the desired characteristic. |
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Term
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Definition
| When both alternative alleles are present in a particular cell nucleus |
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Term
| Mutations to the genome of an organism... |
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Definition
| Are either harmful, neutral or beneficial |
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Term
| If the characteristic controlled by a dominant allele is to be evident in the phenotype an organism must be... |
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Definition
| On one or both of the chromosomes of a homologous pair |
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Term
| If a homozygous dominant parent is crossed with a homozygous recessive parent the offspring... |
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Definition
| will all display the dominant phenotype |
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Term
| Cystic fibrosis is a recessive disorder. This means that someone with cystic fibrosis... |
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Definition
| Has two copies of the defective allele |
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Term
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Definition
| Differences of characteristics such as height, weight, eye and hair colour, shape of nose, language, knowledge and skills from 'normal' characteristics. |
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| Inherited characteristics |
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Definition
| characteristics that are passed down from parents |
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Term
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Definition
| A photograph of a human chromosomes arranged in pairs. |
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Term
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Definition
| Cell division in which the new cells are copies of the parent cell. The cell divides itself into two copies of the original. |
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Term
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Definition
| Cell division in which the cell halves the chromosomes of the parent cell. |
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Term
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Definition
| Combination of both sex cells, the "product" of sexual reproduction |
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Term
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Definition
Characteristic which is 'hidden'. The recessive allele (n).
N: black hair n: red hair
n n
N Nn Nn <-- 50% chance of having black hair
n nn nn <-- 50% chance of having red hair |
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Term
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Definition
Characteristic that shows itself. The dominant allele (N).
N: black hair n: red hair
n n
N Nn Nn <-- 50% chance of having black hair
n nn nn <-- 50% chance of having red hair
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Term
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Definition
| A change in the type or amount of DNA. Can be caused by radiation, viruses, and errors during DNA replication and meiosis. |
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Term
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Definition
when neither alleles are dominant. example:
N N
M MN MN
M MN MN |
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Term
| Through what process is mRNA made? |
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Definition
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Term
| Through what process is mRNA made? |
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Definition
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