The mother has curly blonde hair, the father has straight dark hair. Is it possible to give birth to children

The mother has curly blonde hair, the father has straight dark hair. Is it possible to give birth to children with straight blond hair if the maternal grandmother has straight hair and the grandfather curly; the paternal grandfather has blond hair.

M – curly
m – straight
T – dark
t – light
R: wives. Mmtt * husband. mmtt
gametes: Mt mt; mt mt
F1: MmTt (dark curly); Mmtt (light curly); mmTt (dark straight lines); mmtt (light straight)
Based on the conditions of the problem, the genotypes of the parental individuals are: Mmtt – light curly, mmTT – dark straight lines.
In the offspring, 4 different genotypes and phenotypes are distinguished.
Probability of having a blonde baby with straight hair = 25%.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.