Question

СРОЧНООО! решите пожалуйста, с дано и с решением, буду очень благодарна 1. У человека карий цвет глаз доминирует над голубым, а праворукость над леворукостью. Какие дети могут родиться от родителей один из которых кареглазый левша, а другой – голубоглазая правша. Оба родителя гетерозиготны по одному из указанных признаков.

Answer 1

(дано)карие глаза A/AA,Aa
голубые глаза a/aa
праворукость B/BB,Bb
леворукость b/bb
(решение)
родители(P) Aabb*aaBb
гаметы(G) Ab, ab/ aB, ab
поколение(F1) AaBb(карие глаза+правша), Aabb(карие глаза+левша),aaBb(голубые глаза+правша), aabb(голубые глаза+левша). 
Ответ: 25% карие глаза+праворукость, 25% карие глаза+леворукость, 25% голубые глаза+праворукость, 25% голубые глаза+леворукость

Answer 2

Inheritance of Eye Color and Handedness

When it comes to the inheritance of eye color and handedness, there are a few key genetic principles to consider. Eye color is determined by multiple genes, while handedness is believed to be influenced by a combination of genetic and environmental factors.

In the given scenario, one parent is brown-eyed and left-handed (karyglazyy levsha), while the other parent is blue-eyed and right-handed (goluboglazaya pravsha). Both parents are heterozygous (heterozigotny) for one of the traits.

To determine the possible outcomes for their children, we need to consider the inheritance patterns for each trait separately.

Inheritance of Eye Color

Eye color is a complex trait influenced by multiple genes. However, for simplicity, we will consider a simplified model where eye color is determined by two genes: one controlling the production of brown pigment (B) and the other controlling the production of blue pigment (b).

In this model, brown eye color (karyy) is dominant over blue eye color (goluboy). Therefore, an individual with the genotype BB or Bb will have brown eyes, while an individual with the genotype bb will have blue eyes.

Based on the given information, one parent is brown-eyed (karyglazyy), which means they must have at least one dominant brown eye color allele (B). However, since they are heterozygous (heterozigotny) for the trait, they could have the genotype Bb.

The other parent is blue-eyed (goluboglazaya), which means they must have two recessive blue eye color alleles (bb).

Combining the genotypes of the parents, we have:

- Parent 1 (karyglazyy levsha): Bb - Parent 2 (goluboglazaya pravsha): bb

To determine the possible eye color outcomes for their children, we need to consider the possible combinations of alleles from the parents.

The possible genotypes and corresponding eye colors for the children are as follows:

- Child 1: Bb (brown eyes) - Child 2: Bb (brown eyes) - Child 3: bb (blue eyes) - Child 4: bb (blue eyes)

Therefore, the children can have a combination of brown and blue eye colors, with two children having brown eyes and two children having blue eyes.

Inheritance of Handedness

The inheritance of handedness is not as well understood as eye color. It is believed to be influenced by a combination of genetic and environmental factors. While there is evidence of a genetic component, no specific genes have been identified as the sole determinants of handedness.

In the given scenario, one parent is left-handed (levsha), while the other parent is right-handed (pravsha).

Since there is no clear-cut genetic pattern for handedness, it is difficult to predict the handedness of the children based solely on the parents' handedness.

It is important to note that handedness can also be influenced by environmental factors and personal preference. Therefore, even if both parents have a specific handedness, it does not guarantee that their children will have the same handedness.

In conclusion, based on the given information, the children can have a combination of brown and blue eye colors, with two children having brown eyes and two children having blue eyes. The handedness of the children cannot be accurately predicted based solely on the parents' handedness.

Please note that the information provided here is based on a simplified model and there may be other factors that can influence eye color and handedness.