Question

Чоловік – лівша з блакитними очима (обидві ознаки рецесивні), його дружина має карі очі і вона правша, але її мати була блакитноокою лівшою. Гени, що зумовлюють ці ознаки не зчеплені. Визначте ймовірність народження дитини , подібної за цими ознаками на батька

Answer 1

Ответ:

25%

Объяснение:

мати - гетерозеготна, батько гомозиготний.

P: ааbb × AaBb

F1: AaBb, Aabb, aaBb, aabb.

1/4 ймовірність народження синьокого лівші, або ж 25 %

Answer 2

Probability of Child Inheriting Similar Traits

In this scenario, we are considering the inheritance of two specific traits: handedness (left-handed or right-handed) and eye color. Given that the traits are not linked, we can calculate the probability of their child inheriting similar traits from the father.

1. Handedness Inheritance: - The father is left-handed, and this trait is recessive. - The mother is right-handed, and she carries the recessive gene for left-handedness. - The mother's mother was left-handed and had blue eyes.

2. Eye Color Inheritance: - The father has blue eyes, which is a recessive trait. - The mother has brown eyes, indicating that she carries the recessive gene for blue eyes.

Probability Calculation

Handedness: - The father's genotype for handedness: ll (recessive left-handed gene) - The mother's genotype for handedness: Ll (carries the recessive left-handed gene) - The Punnett square for these genotypes yields a 25% chance of the child being left-handed like the father.

Eye Color: - The father's genotype for eye color: bb (recessive blue eye gene) - The mother's genotype for eye color: Bb (carries the recessive blue eye gene) - The Punnett square for these genotypes yields a 25% chance of the child having blue eyes like the father.

Conclusion

The probability of the child inheriting both left-handedness and blue eyes from the father is 25%. This is based on the independent inheritance of these two traits, as they are not linked.