Question

У арбуза ген зеленой окраски плода доминирован над геном полосатой окраски а) каковы генотип родительских форм, если в потомстве оказалось зеленых и полосатых полос поровнупоровнупоровну? б)на полях совхоза выращены арбузы полученные из гибридных семян. Среди них 3150 растений зеленые плоды. Сколько среди них гетерозиготных растений?

Answer 1

А) одна особь гетерозигота а вторая гомозигота

Answer 2

Genotype of Parental Forms

If the green color of the fruit is dominant over the striped color, and the offspring consists of both green and striped fruits in equal proportions, we can determine the genotype of the parental forms.

Let's assume that the dominant allele for green color is represented by "G" and the recessive allele for striped color is represented by "g". Since the offspring consists of both green and striped fruits in equal proportions, we can conclude that the parental forms are heterozygous for the color trait.

The genotype of the parental forms can be represented as follows: - The green fruit: Gg - The striped fruit: Gg

This means that both parental forms carry one copy of the dominant allele (G) and one copy of the recessive allele (g) for the color trait.

Number of Heterozygous Plants

If 3150 plants with green fruits were grown from hybrid seeds, we can determine the number of heterozygous plants among them.

Since the green color is dominant, plants with green fruits can be either homozygous dominant (GG) or heterozygous (Gg). To determine the number of heterozygous plants, we need to know the proportion of homozygous dominant plants.

Unfortunately, the information provided does not specify the proportion of homozygous dominant plants among the green-fruited plants. Therefore, we cannot determine the exact number of heterozygous plants among the 3150 plants with green fruits.

If we assume that all the green-fruited plants are heterozygous (Gg), then the number of heterozygous plants would also be 3150. However, without additional information, we cannot make a definitive determination.

Please note that this response is based on the information provided and may not be applicable in all scenarios.