Sandstone. i remember learning this in 4th grade! if you were to look it up on the internet, you would find it just as easily as i did
Answer:
The correct option is D
Explanation:
Beta-thalassemia major is a hereditary disorder that usually causes severe anaemia. This mutation/disorder eventually leads to death if untreated especially during in the first two years of infancy. The treatment usually involves the transfusion of blood to clear the phenotypic blockage caused by the mutation. However, it requires both alleles to have the thalessemia mutation for a patient to be said to have beta-thalassemia major. Hence, <u>it is </u><u>not true</u><u> that it involves just the x allele and thus affects males more often than females</u>.
<span>The correct answer is
posterior pituitary.</span>
ADH (AntiDiuretic Hormone) or Vasopressin is a peptide hormone which is produced in the hypothalamus. ADH is released from vesicles inside the cells of posterior pituitary into the circulation. ADH is released as a response of hyperosmolality of extracellular fluid. It increases the reabsorption of water in kidneys and constricts the blood vessels.
Oxytocin is also peptide hormone produced by the hypothalamus and released by the posterior pituitary. It has a role in sexual reproduction.
<span> </span>
The process of organ formation in an embryo is called "Organogenesis." Organogenesis happens as early as week 5. It refers to the period after an egg has been fertilized and has been implanted in the uterus. The embryo develops the organs.
Humans have 23 pairs of chromosomes because 23 chromosomes come from the father and the other 23 come from the mother, and thus humans end up with 46 chromosomes. <span>
With 23 sets, you have two copies of each gene.</span>
This is what happens in normal situations. However, in some cases during cell division, there could be more or less that 46 chromosomes.