Genetic inheritance Flashcards

1
Q

Genotype

A

Alleles a organism has for a particular characteristic

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2
Q

Phenotype

A

Visible characteristics of an organism which occur as a result of genes

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3
Q

Mutation

A

Change in a gene or chromosome. Can be caused by ionising radiation, chemical mutagen or just random chance.

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4
Q

Natural selection

A

Survival of the fittest- The adapted species will survive better and pass on genes.

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5
Q

Dominant and recessive alleles

A

Dominant - 2 dominant or 1 Dominant, they always take charge. They define the characteristics

Recessive - Will only change things if there are two of them. They go in pairs

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6
Q

Homozygous

A

2 alleles that are the same

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7
Q

Heterozygous

A

2 Different alleles

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8
Q

Blood type genes

A

The gene controlling human ABO blood groups has 3 alleles, instead of just 2.

They are :Ia, Io, Ib
IA or IA/IO = A
IB = B
IAIB = AB
IO = O
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