Question

У человека ген темной окраски волос доминирует над геном светлой окраски.темноволосая женщина,отец которой был светловолосым.вышла замуж за светловолосого мужчину.каковы возможные генотипы и фенгтипы потомства?

Answer 1

Ген признак 
А темная окр, волос 
F1 светловолосый 
 т  т  т   с  
Ответ : Генотипы  родителей  Аа,1/4 часть  светловолосые , первый ребенок .

Answer 2

Possible Genotypes and Phenotypes of the Offspring

In this scenario, we have a dark-haired woman whose father had light hair. She married a man with light hair. We need to determine the possible genotypes and phenotypes of their offspring.

To do this, we need to consider the inheritance patterns of hair color. Hair color is determined by multiple genes, but for simplicity, let's assume that it is controlled by a single gene with two alleles: a dominant allele for dark hair (D) and a recessive allele for light hair (d).

The possible genotypes and phenotypes of the offspring can be determined using a Punnett square. Let's represent the dark hair allele as D and the light hair allele as d.

The genotypes of the parents are as follows: - Dark-haired woman: DD (homozygous dominant) - Light-haired man: dd (homozygous recessive)

Using a Punnett square, we can determine the possible genotypes and phenotypes of their offspring:

| | D | D | |----------|----------|----------| | d | Dd | Dd | | d | Dd | Dd |

From the Punnett square, we can see that all the possible genotypes of the offspring are Dd, which means they will all be carriers of the dark hair allele. However, since the dark hair allele is dominant, the phenotype of all the offspring will be dark-haired.

Therefore, the possible genotypes and phenotypes of the offspring are as follows: - Genotype: Dd - Phenotype: Dark-haired

Please note that this is a simplified explanation and hair color inheritance can be more complex in reality, involving multiple genes and alleles.