A gene contains instructions that are coded for making and responding to the body needs especially body proteins. In the human body, there are about 25,000 genes. However, many genetic disorders are bound to arise with poor functioning…
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Genes are the basics of genetics (Nadeau & Dudley 2011, 1015).
Genes are packed in bundles referred to as chromosomes. They are threadlike structures that are located inside the nucleus of a living being. For a human being, there are 23 pairs of chromosomes meaning that there are a total of 46 chromosomes (De Koning & Haley 2005, 386). Of these pairs of chromosomes, 1 pair is the sex chromosomes that determines the sex of an individual and their body characteristics. The other pair of chromosomes is referred to as autosomal chromosomes and their function is to determine the rest of the body make up.
Gregor Mendel is referred to as the father of genetics due to his study of the inheritance in pea plants. A gene contains an allel that is inherited from both parents i.e. tongue roller and non-tongue roller are alleles for the ability to roll the tongue and more than two allels can exist for any specific gene but only two of them will be found in an individual. Allels may be similar or different and if they are identical for a gene are referred to as a homozygous. If the organism has two different alleles for a gene, it is a heterozygous. He hypothesized that these allels separate randomly during gametes production i.e. an egg and a sperm that will carry only one allel for the inherited trait. When they unit each gamete will contribute its allele restoring the paired condition of the offspring (Moore 2001, 21). This is referred to as the law of segregation. He also found out that each individual pair of alleles will separate independently of the other pair of alleles during the process of gamete formation and referred this as the law of independent assortment. He also described that if the two allels of an inherited pair are different (heterozygous), only one will determine the organism’s appearance and will be referred to as the dominant allele while the other one is the recessive allele. He referred this as the
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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
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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