To create a simulation of 20,000 sheep grazing in an isolated valley, a scientist needs to determine the average amount of grass eaten per day by an actual sheep. which of the following is the best course of action for establishing this parameter?

a. divide the total amount of grass eaten by all sheep in the valley by 20,000.
b. determine the average daily grass consumption for 20 randomly selected sheep.
c. choose a random value to use as the daily amount of grass eaten by one sheep.
d. measure the amount of grass eaten per day by a single sheep.

Liquid water turns into water vapor at which step in the water cycle

What does it mean for a cell membrane to be selectively permable

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?