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19 Cards in this Set
- Front
- Back
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Multiple Alleles |
When more than two alternative alleles are present for a gene |
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Coat Colour in Rabbits |
The most famous example of multiple alleles was discovered in the |
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o Full colour/Agouti (brownish grey) o Chinchilla (silvery grey) o Himalayan – white with black extremities o Albino - complete white |
The rabbits may have the following colour. |
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[n(n+1)]/2. |
The numer of genotypes possible in a diploid organism with 'n' different alleles is given by the formula |
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Wild strain of Drosophila |
The wings are normally long (vg+) |
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vgv (vestigial) and vga (antlered) |
The two mutant alleles in this locus are |
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Vestigialantlered |
when the vestigial wing and antlered flies are crossed the F1 hybrids are intermediate in appearance |
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1. Coat Colour in Rabbits 2. Nature of Wing in Drosophila 3. Eye Colour in Drosophila 4. ABO Blood Group System in Human |
Example of Multiple Alleles |
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Wild type |
What type of Drosophila have red eyes |
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(white apricot) (white eosin) (white cherry) (white coral) (white coloured) (white wine) (white blood) (white carrot) (white coffee) |
The other mutants alleles of this eye colour in Drosophila |
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Isoalleles |
Such types of alleles, which act within the phenotypic range of each other |
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Universal recipients |
The AB blood group individuals can receive blood from all the group |
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Universal donors |
O individuals can donate blood to all the groups |
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A and B antigens |
found not only on red blood cells but often in the body fluids as well |
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Rh-factors |
They immunized rabbits with blood of a monkey (Macaca rhesus). |
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Rhesus (Rh-antigen). |
The antigens of both monkeys and humans were called |
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Rh-positives |
Individuals carrying the Rh-antigens |
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Rh-negatives |
Those who do not carry Rh-antigen |
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haemolytic disease of the newborn, “Erythroblastosis foetalis” |
A baby's blood count can get dangerously low when this condition occurs. |
