Question

Which of the following will not result in variations among siblings?
A. Independent assortment of genes
B. Crossing over
C. Linkage
D. Mutation

Answer 1

Hint: There are so many reasons for the genetic variations and it may be due to random fertilization and gene combinations and sometimes gene variations were observed in mutations.

Complete answer:
Mendel proposed so many laws regarding genetics and one among them was, an independent assortment of genes, and it tells how the different cells that separate from each other independently while during meiosis.
Independent assortment of a gene occurs during the meiosis in eukaryotes, meiosis is one type of cell division which occurs in reproductive cells where the daughter cells formed are a haploid set of chromosomes.
During meiosis, a pair of homologous chromosomes is divided into half to form the haploid cells and its separation or assortment of the homologous chromosome is random.
Another feature of the independent assortment of the gene is that DNA breaks into pieces and joins together with other different particles and results in the recombination. As recombination occurs this option is wrong
Crossing over: crossing over is the exchange of genetic material of the different chromatids or two non-sister chromatids during gamete formation, this is to shuffle the genes so that the daughter cell carries different types of genes, which are completely different from the parents, so it is also a wrong answer.
Linkage: According to the experiments done by the Morgan on the drosophila
In drosophila, Morgan carried out the experiment called dihybrid cross to study the genes that were sex-linked
They located the gene on the x chromosome and they observe that when two genes are located on the same chromosome the characteristic of parents are higher than the non-parents and the recommendations or variations are very less
Mutation: Mutation occurs when there is a change is DNA me it occurs if the genes are altered, and variations have occurred so it is the wrong answer

So, the correct option is C) linkage is the correct answer.

Note:
Genetic variations are a very important thing and it also plays a very important role in evolution, where it also involves the increase or decrease in the frequency of genes or allele of chromosomes.