Table 1 Possible allelic combinations in a parent-offspring pedigree
Parents | 1 | 2 | Offspring* | 1 | 2 | 3 | 4 | Case | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alleles | 1 | 2 | 1 | 2 | Alleles | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | (Variant) |
a | a | a | a | a | a | 1 | ||||||||
a | a | b | b | a | b | 2 | ||||||||
a | a | a | b | a | a | a | b | 3 (I) | ||||||
a | b | b | b | a | b | b | b | 3 (II) | ||||||
a | a | b | c | a | b | a | c | 4 (I) | ||||||
a | c | b | b | a | b | b | c | 4 (II) | ||||||
a | b | c | c | a | c | b | c | 4 (III) | ||||||
a | b | a | b | a | a | a | b | b | b | 5 | ||||
a | b | a | c | a | a | a | b | a | c | b | c | 6 (I) | ||
a | b | b | c | a | b | a | c | b | b | b | c | 6 (II) | ||
a | c | b | c | a | b | a | c | b | c | c | c | 6 (III) | ||
a | b | c | d | a | c | a | d | b | c | b | d | 7 (I) | ||
a | c | b | d | a | b | a | d | b | c | c | d | 7 (II) | ||
a | d | b | c | a | b | a | c | b | d | c | d | 7 (III) | ||