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ed by the combination of these chromosomes; and males have a combination of 46, XY chromosomes, while females have a combination of 46, XX chromosomes. These chromosomes consist of strands of genetic information, which are termed the DNA. Genes are parts of the DNA, and their location is known as the locus. Genes produce protein in human bodies through the information present in them. An autosomal chromosome from the mother and the father, constitute a pair of chromosomes that carry information that is by and large the same (Genetics).
The genes in different persons will be almost similar, with slight variations. In the DNA, these variations, which transpire in less than 1% of the DNA sequence, produce alleles. The abnormality of a gene results in abnormal protein, or an abnormal quantity of a normal protein. The pairs of autosomal chromosomes contain a gene from the mother and a gene from the father. If both these genes are healthy, then the pair is termed a healthy pair. If one of the genes is defective, and if the other gene produces extra amounts of proteins to prevent disease; then the disease is termed as recessive. Moreover, the gene is deemed to have been inherited in a recessive manner (Genetics).
In some cases, just one gene will be responsible for causing a disease. This is described as a dominant hereditary disorder. In such disorders, if one abnormal gene is inherited from a parent, then the child is likely to develop the disease. An individual with one abnormal gene is termed as heterozygous for that gene. Children, who receive an abnormal recessive disease gene from both the parents, develop the disease; and are rendered homozygous for that gene. If both the parents have a copy of a recessive disease gene, then each of their children, has a one in four, risk of developing that disease. If one of the parents has two copies of the recessive disease gene and the other parent has one copy, then each of their children, has a 50% chance of being
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Generally, if there is a heritable factor, then the cancer will occur earlier in life than a sporadic condition. However, it is important to note that people do not inherit breast cancer, but rather an increased likelihood of having the disease . Around 20 – 30% of women who have breast cancer have the disease occurring within their family, however there are also many environmental risk factors, such as use of alcohol or exposure to radiation .
This is a discussion on the issues dealing with behaviour genetics and ethics that has been a major part of the news in recent months. Several areas of the arguments would deal with the genetics and behavioural changes, whether behaviour is species specific, whether behavioural changes relate to changes in biological structures and processes and the evolutionary history or DNA sequencing that are related to behavioural genetics.
In order for such a procedure to be done, two RAD51 targeting constructs that contained either neomycin or blasticidin first had to be prepared. Once these targeting constructs were prepared, the RAD51 neo constructs were transpected into DT40 cells, and heterozygous clones were isolated for the RAD51 gene.
ant trait) and the other that is a short plant (recessive trait) is expected to produce an F1 (first) generation of plants that are al tall because the allele of tallness would dominant to shortness in the offspring produced. However, all plants produced in F1 generation would
Here a gene could be cut into small fragments, and a fragment from another gene having a different make up, can be inserted between the cut fragments, and then reattached together to form a completely new gene. There are many
The questions are undertaken based on credible experiments.
The probability of the parents getting 10 children where 3 that are normal for both traits, 3 that have iron overload, but normal blood calcium and 4 that exhibit both iron overload and
Each gene codes for a specific protein in the body by specifying the order that the amino acids needs to be joined together. The function of the DNA in the body is carrying genetic code of information that determines the characteristics of a living thing but it is
If you fertilize a trisomic Jimson weed plant, what zygotes would be formed? Tell which zygotes are diploid and which are trisomic. Assume that only the univalent mode occurs during meiosis;
2. Down syndrome can result from a Robertsonian
single “composite” cell of higher complexity “evolved from more separate simpler cells living in a symbiotic relationship with one another” (Karp, 2009, p.25). The evolution of eukaryotic cells begins in step 1; a large anaerobic which is heterotrophic prokaryote taking
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