Answer: Crossing-over allows the genes that come from each parent to recombine before they are passed on to future generations because chromatids of homologous chromosomes mate and exchange sections of their DNA.
Explanation:
Chromosome crossing-over is the process by which chromatids of homologous chromosomes mate and exchange sections of their DNA during prophase I of meiosis, when pairs of homologous chromosomes, or of the same type, are aligned. The chromatids of the homologous chromosomes break off in the chiasmas and rejoin to allow recombination of the linked genes. So it occurs when regions at chromosome breaks mate and then reconnect to the other chromosome. <u>The result of this process is an exchange of genes, called genetic recombination</u>.
This allows the genes that come from each parent to recombine before they are passed on to future generations. Then, <u>it is an important source of genetic variability</u>, since it involves an exchange of segments between homologous chromosomes during the development of gametes. <u>This process allows that the descendants of an individual are genetically very different</u>, since it is very unlikely that an individual produces two equal gametes, because all of them have different segments of the homologous chromosomes.
<em>"kids are not little grown-ups" </em>pediatric-beginning diabetes is unique in relation to grown-up diabetes due to its particular the study of disease transmission, pathophysiology, formative contemplations, and reaction to treatment.
Imminent longitudinal investigations of people in danger of creating <em>type 1 diabetes</em> have shown that the sickness is a continuum that advances successively at variable yet unsurprising rates through particular stages before the beginning of symptoms.<em>type 1 diabetes creates in three phases which are following.</em>
Stage 1 is characterized of β-cell as confirm by at least <em>with normoglycemia and two islet autoantibodies and is presymptomatic. </em>
Stage 2 is the β-cell autoimmunity with the presymptomatic and dysglycemia. Beginning of symptomatic illness coming about <em>because of insulin lack in youngsters with type 1 diabetes. </em>
Stage 3 Reception of this arranging characterization gives an institutionalized scientific categorization to type 1 diabetes and may help <em>the improvement of treatments and the plan of clinical preliminaries to forestall symptomatic sickness.</em>
During puberty, a number of changes occur in the body. The hormone responsible for the development of these characteristics in females is Estrogen. Estrogen causes the female's body to mature and prepare it for pregnancy.
Answer: Rosalind Franklin discovered the density of DNA and, more importantly, established that the molecule existed in a helical conformation. Her work to make clearer X-ray patterns of DNA molecules laid the foundation for James Watson and Francis Crick's suggestion that DNA is a double-helix polymer in 1953.
