Question

У людини кароокість домінує над блакитністю, а праворукість над ліворукістю. Кароокий лівша одружився з блакитноокою жінкою правшею. У них народилася блакитноока дитина - лівша. Визначте генотип матері, батька й дитини

Answer 1

Дано:
А-карий
а-голубой
В-праворукость
b-леворукость
Решение:
Р Ааbb(отец) х ааBb(мама)
G Ab, ab,,,,,,,,,,,,,,ab, aB
F1 Aabb, AaBb, aabb(голубоглазая левша), aaBb.
Ответ: генотип : Aabb(отец), aaBb(мама), aabb(ребенок).

Answer 2

Genotype of the Mother, Father, and Child

To determine the genotype of the mother, father, and child in this scenario, we need to consider the dominance of certain traits and the inheritance patterns of these traits.

1. Dominance of Eye Color: - The question states that "karookist" (presumably brown-eyed) dominates over "blakitnist" (presumably blue-eyed). - This suggests that the "karookist" trait is dominant, while the "blakitnist" trait is recessive.

2. Dominance of Handedness: - The question states that right-handedness dominates over left-handedness. - This suggests that the "pravorukist" (right-handedness) trait is dominant, while the "livorukist" (left-handedness) trait is recessive.

3. Parents' Traits: - The father is a "karookiy livsha" (brown-eyed left-hander). - The mother is a "blakitnooka pravsha" (blue-eyed right-hander).

4. Child's Traits: - The child is a "blakitnooka livsha" (blue-eyed left-hander).

Based on this information, we can determine the possible genotypes of the mother, father, and child.

- Genotype of the Mother: - The mother is a "blakitnooka pravsha" (blue-eyed right-hander). - Since blue eyes are recessive, her genotype could be either "blakitnooka/blakitnooka" or "blakitnooka/karooka" (where "karooka" represents the dominant brown-eyed allele). - Since right-handedness is dominant, her genotype must include the dominant allele for right-handedness, which is "pravsha/pravsha".

- Genotype of the Father: - The father is a "karookiy livsha" (brown-eyed left-hander). - Since brown eyes are dominant, his genotype must include the dominant allele for brown eyes, which is "karookiy/karookiy". - Since left-handedness is recessive, his genotype could be either "livsha/livsha" or "livsha/pravorukiy" (where "pravorukiy" represents the dominant right-handed allele).

- Genotype of the Child: - The child is a "blakitnooka livsha" (blue-eyed left-hander). - Since blue eyes are recessive, the child must have inherited the recessive allele for eye color from both parents, which means the child's genotype is "blakitnooka/blakitnooka". - Since left-handedness is recessive, the child must have inherited the recessive allele for handedness from both parents, which means the child's genotype is "livsha/livsha".

To summarize: - Genotype of the Mother: "blakitnooka/pravsha" - Genotype of the Father: "karookiy/livsha" - Genotype of the Child: "blakitnooka/livsha"

Please note that this analysis assumes simple Mendelian inheritance patterns and does not take into account other possible genetic factors that may influence eye color or handedness.