Which of the following can make new combinations of alleles on a chromosome?

What creates new combinations of genes in chromosomes?

Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.

What is the formation of new combinations of different alleles on a chromosome?

Then, while the homologous chromosomes are tightly paired, the members of each pair trade adjacent bits of DNA in a process called crossing over, also known as recombination (Figure 1). This trading of genetic material creates unique chromosomes that contain new combinations of alleles.

Which of the following new combinations of genes are formed?

Sexual reproduction generates new genetic recombination leading to variations.

What are the different combinations of alleles?

If the two alleles are the same, they are described as homozygous. If the two alleles are different, they are described as heterozygous. If the makeup of an individual’s alleles for a trait, its genotype, is known, we can predict how likely it will be that those alleles will appear in its offspring.

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Which process creates unique combinations of genes?

Recombination is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles. This recombination process creates genetic diversity at the level of genes that reflects differences in the DNA sequences of different organisms.

What are the different chromosome combinations?

These include 22 pairs of “autosomes” (which refers to all chromosomes that are not sex chromosomes) and a pair of sex chromosomes, either an X and a Y (which makes for a male) or two Xs (female).

About X and Y Variations

  • 47,XXY (Klinefelter syndrome)
  • 47,XXX (Trisomy X)
  • 47,XYY.

Which of the following is responsible for the formation of new genetic combination?

The correct option is c Sexual reproduction.

Is a process of formation of new combination of alleles?

Recombination is the sorting of alleles into new combinations. Following the formation of gametes over two generations shows how recombination can produce new allelic combinations (lower right) or stay the same (lower left).