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Identical Twins, similar Genes

You probably can tell by their close resemblance that these two people are the same twins. The same twins build from the exact same fertilized egg, for this reason they inherited copies of the same chromosomes and also have all the very same genes. Uneven you have an the same twin, nobody else in the world has exactly the same genes together you. What space genes? just how are they related to chromosomes? and also how do genes do you the person you are?

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Figure (PageIndex1): identical twins



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Human Chromosomes

Each species is defined by a set variety of chromosomes. The human number is 23. Person cells normally have 2 sets of chromosomes in each of their cells, one collection inherited from each parent. There room 23 chromosomes in every set, for a total of 46 chromosomes every cell. Every chromosome in one collection is matched by a chromosome that the same type in the other set, for this reason there are actually 23 pairs of chromosomes per cell. Every pair consists of chromosomes that the same size and also shape, and they additionally contain the exact same genes. The chromosomes in a pair are well-known as homologous chromosomes. As see in figure (PageIndex2), there room two types of chromosomes, autosomal and sex chromosomes. Read much more about this in the genetics chapter.

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api/deki/files/15798/f-d_c6ceab13b80d183e913de855dbf46cbd22e2cd094fd84bbefe3dc0ce%252BIMAGE_THUMB_POSTCARD%252BIMAGE_THUMB_POSTCARD.jpg?revision=1&size=bestfit&width=268&height=395" />Figure (PageIndex3): affiliation Map for the person X Chromosome. This affiliation map shows the places of several genes on the X chromosome. Some of the genes code for typical proteins. Others code for abnormal proteins the lead to genetic disorders.