Answer:
1. why: to protect the organism against pathogenic infections
2. how: by using genome engineering techniques. For example, by using the CRISPR/Cas9 genome editing system in order to enlarge telomeres and thus avoid the negative effects of aging (i.e., tissue/organ atrophy).
Explanation:
The thymus plays a central role in immunity since in this organ thymus cell lymphocytes (T cells) mature into immunocompetent T-cells that initiate immune responses against pathogenic infections. Moreover, a particular type of B lymphocytes known as thymic B cells also resides at the thymus. It has been proposed that thymic B cells might be involved in the negative selection of T cells. Thus, the thymus plays a critical role in protecting the organism from infections, thereby it would be imperative to avoid thymus atrophy if human life is expanded. Nowadays, we know that telomere length shortens with age, thereby it is expected that genome engineering techniques capable of restoring telomere length might eventually avoid age effects such as, in this case, thymus atrophy. In this regard, the CRISPR-Cas 9 system is a versatile low-cost genome engineering tool that might be used for the addition of nucleotides at telomere ends.
<span>This is a true statement. When a person is not being stimulated but is in the process of becoming tired, they will start to experience almost instant drowsiness. This is why it is important for a person to continually be doing something if they are starting to become tired and are in a dangerous situation. This will alleviate the tendency to start to drowze.</span>
<span>The molecular clock has been useful to determine the phylogenetic relationships of species based on the assumption that they cannot be compared to non molecular methods such as comparative anatomy. The molecular clock helps us discover organisms that have a little common traits or features between evolutionary relationships.</span>
I won’t be willing to eat this altered genetically crops because they are much harmful to humans. For example some links term genetically crops do gluten disorders that affect millions of Americans. Again there are multiple toxins which are from genetically altered crops which detect in real and fetal blood.
Negatives.
Genetically altered crops have got DNA and can be transferred to people who eat them.
Genetically altered crops can cause modified corn to rat tumours.
They cause human breast cancers induced by glyphosate via estrogen receptors.
In pigs genetically crops cause severe stomach inflammation and enlarged uteri.
First comes fertilization, when two gametes combine to form a zygote.
