Damage in the bone marrow, called as aplastic anemia leads to lower production of both red and white blood cells, causing oxysgen starvation and infection.
Platelets are also reduced.
The prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called a nucleoid
Answer:
3- Breast-feeding can reduce an infant’s risk of infection, allergies, and certain chronic diseases.
.4- All mothers should consume 500 kcal extra daily while breast-feeding until weaning of the infant.
5- Women with AIDS or active tuberculosis should feed formula rather than breast-feed.
Explanation:
Breastfeeding is also a great benefit to the environment and society, that is, it does not require the use of energy for manufacturing or create waste or air pollution. Also, there is no risk of contamination and it is always at the right temperature and ready to feed. Given the importance of breastfeeding for the health of mothers and babies, Centers for Disease Control and prevention supports breastfeeding through hospital initiatives, work-site accommodation, continuity of care and community support initiatives. Colostrum is the earliest breast-milk produced, beginning in mid-pregnancy (12-18 weeks) and is continually produced for the first few days after baby's birth, it provides all the nutrients and fluid that your newborn needs in the early days, as well as many substances to protect your baby against infections. Mothers with untreated and active tuberculosis infections are not advised to breastfeed. They may breastfeed after their infection is cured or brought under control so that it does not spread to the infant.
Answer:
The evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect.
Explanation:
Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time and eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster -bottleneck effect- or because of a population split -founder effect-. In <u>founder effect</u>, a new population originates when a few individuals who are coming from a bigger population carrying its genes, settle down in a new area and reproduce. This small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be completely lost. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, <u>genetic variability is reduced</u> and there exists the possibility of developing a peculiar allelic composition. If the number of individuals that originated the new population is low, the founder effect will be very extreme, because the effects of the genetic drift are inversely proportional to the original number of individuals.
<em>In the exposed situation, the evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect. The fact that both islands are similar in their frequencies might be due to little genetic variation on island 1, or because dispersion to island 2 is a recent event on time. </em>
