Patient one
maudie stillwell arrives at your clinic a very sick little 4-year old girl. she is
seriously undersized and underweight for her age. she also has poor muscle
coordination and show signs of a general neural degeneration. upon examination you
discover that her liver and spleen are both markedly enlarged. although neither
parent has any symptoms, her mother reports that two of her sisters (maudie's aunts)
"failed to thrive" and died early in childhood. biopsies reveal that cells in multiple
organs of maudie's body, including her liver, spleen, and lungs seem to be
accumulating excessive amounts of lipids. your diagnosis is that maudie suffers
from niemann-pick disease, a disorder stemming from a failure of cells to break
down excess lipids.
1. with what organelle might this disorder be associated?

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

answer: b

coz red blood cells marrow and circulates the body for 120 days.