Read the following scenarios. then follow the method in the lesson for using the hardy-weinberg equations to find the gene frequencies of both alleles in each scenario. part a in a certain population of 540 cats, a single gene with two alleles controls thickness of the cats' fur. allele c provides for thick fur and is dominant, and c provides thin fur. in this population, 49 cats have thin fur. what are the frequencies of the two alleles? select one: a. p = 0.7, q = 0.3, where p is the allele for thick fur and q is the allele for thin fur. b. p = 0.9, q = 0.2, where p is the allele for thick fur and q is the allele for thin fur. c. p = 0.5, q = 0.3, where p is the allele for thick fur and q is the allele for thin fur. d. p = 0.3, q = 0.3, where p is the allele for thick fur and q is the allele for thin fur.

by drinking easy

very easy

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!