The information in pedigrees that is useful for mapping disease genes is sometimes limited. This pedigree shows segregation of neurofibromatosis, which is a fully-penetrant, autosomal dominant condition, and a single nucleotide polymorphism, SNP1, which has alleles G or T. Why is the cross in generation I not useful for determining the degree of linkage between the disease-causing gene NF and SNP1?

the answer is b: 1.4 km/hr

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.