Beth studies the albinism mutation in the wild wallaby, which is an herbivore. a wild wallaby with albinism (left) and a wild wallaby with its natural
coloring (right) are shown. how would the color mutation affect a wallaby that was living in the wild versus one that was living in a zoo?
o
a.
the mutation is likely neutral in both locations because an animal's color doesn't affect its overall survival.
b.
the mutation is likely harmful in both locations because the animals can't hide from prey.
the mutation is likely harmful to the wild animal because it puts it at risk for predation. it is neutral for the zoo animal.
od
the mutation is likely beneficial for the zoo animal because it makes it easier to spot in a zoo enclosure. it is neutral for the wild
animal

for the points

b brown mice / white sand dunes

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!