Question

Срочно!!! У мышей длинные уши наследуются как доминантный признак,а короткие-как рецессивный.Скрестили самца и самку с длинными ушами.В результате скрещивания получилось 1/4 часть потомства с короткими ушами и 3/4-с длинными.Определите генотип самца и самки.

Answer 1

Ответ Аа- самец, Аа- самка

Answer 2

Understanding the Inheritance Pattern of Ear Length in Mice

In this scenario, we are dealing with the inheritance of ear length in mice, where long ears are considered a dominant trait and short ears a recessive trait. We need to determine the genotypes of the male and female mice involved in the cross.

Determining the Genotypes

Based on the given information, we know that when a male with long ears (genotype: LL) is crossed with a female with long ears (genotype: LL), the offspring show a 3:1 ratio of long ears to short ears. This suggests that the male and female mice are both heterozygous for the ear length trait.

Male Genotype: The male mouse's genotype can be represented as Ll, where L stands for the dominant allele for long ears and l stands for the recessive allele for short ears.

Female Genotype: Similarly, the female mouse's genotype can also be represented as Ll.

This conclusion is drawn based on the observed 3:1 ratio of long-eared to short-eared offspring, which is characteristic of a heterozygous cross involving a dominant and a recessive allele.

I hope this helps! If you have any further questions or need additional clarification, feel free to ask.