48:11 What negative effect occurs when there is a decrease in air quality?

faster evaporation of water in the soil
the drying out of fertile land, resulting in dust bowls
the melting of glaciers and polar ice caps
increased illnesses that result in a decrease in population

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

Approximately 90% of all cases of polycystic kidney disease are inherited in an autosomal dominant fashion. the disease is typically related to mutations to genes (pkd1 and pkd2). pkd genes can be found on chromosome 16. the disease occurs in approximately 1: 800 to 1: 1000 people. here is a hypothetical example. the dominant allele d will cause the development of pkd. the recessive allele is known as d. what genotypes would correspond to suffering from pkd? dd, dd what genotypes would correspond to being normal (not suffering from pkd)? dd consider that 1: 1,000 people have pkd in your population of 325million. consider that pkd is inherited in an autosomal dominant fashion. show you math for all of the following questions: what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is p? what is q? how many people in your population would have pkd?

Did you know that a blue wales tongue weighs more than an elephant?