Explain why normal humans do not have three alleles for each single gene trait. When considering phenotypic plasticity, is it possible for different environmental cues to produce the same favorable phenotype? If not, explain why. If so, ...
Examples include Kwa-speaking yam cultivators in West Africa whose agriculture favoured the haemoglobin S (HbS) 'sickle-cell' allele, and Polynesian voyages that led to positive selection for thrifty metabolism, leading to type 2 diabetes susceptibility. Geneticists have recently developed methods to ...
The relationship between sickle cell trait, SCD, and VTE in pregnancy has recently been reviewed.42 In the management of pregnancy and SCD, some groups suggest low-dose aspirin as prophylaxis against preeclampsia, and consideration of LMWH when additional risk factors are present. These risk ...
Classification for fertility is based on two conditions, namely on evidence of an adverse effect on sexual function and fertility and that the effect is not secondary to other toxic effects. To decide on an adverse effect is a relatively simple day-to-day decision in toxicology but whether this...