Question

Допоможіть) Гаплоїдна кількість хромосом для пшениці мякої n=7. Тверда пшениця має карріотип 28 хромосом, мяка пшениця-42 хромосоми. Визначте тип мутації в цих видів рослин.

Answer 1

Haploid Chromosome Number in Wheat

The haploid chromosome number for soft wheat is n=7, while hard wheat has a karyotype of 28 chromosomes and soft wheat has 42 chromosomes [[1]].

Type of Mutation in Wheat

Based on the information provided, the difference in chromosome numbers between soft wheat (42 chromosomes) and hard wheat (28 chromosomes) indicates a type of mutation known as polyploidy. Polyploidy is a type of mutation that involves an increase in the number of sets of chromosomes in an organism. It can occur through various mechanisms, such as the failure of chromosomes to separate during cell division or the fusion of two different species' cells. In the case of wheat, the mutation resulted in an increase in chromosome sets, leading to the different chromosome numbers observed in soft and hard wheat [[2]].

Polyploidy is a common phenomenon in plants and can have significant effects on their characteristics and adaptability. It often leads to changes in plant size, fertility, and other traits. In the case of wheat, polyploidy has played a crucial role in its domestication and the development of different wheat varieties with desirable traits [[3]].

It's important to note that the information provided is based on the given chromosome numbers for soft and hard wheat. For more detailed and specific information, it is recommended to refer to scientific literature or consult with experts in the field of genetics and plant breeding.