To discover the location of a genetic mutation that causes disease in humans, scientists use genetic mapping. Specifically, they
look for genetic markers, or previously discovered DNA polymorphisms, that show statistical association with the disease gene. The statistical association means that the: a. DNA polymorphism causes the disease.
b. disease causes the DNA polymorphism.
c. DNA polymorphism and the disease gene are unlinked.
d. DNA polymorphism and the disease gene are linked.
The correct answer is d. DNA polymorphism and disease gene are linked.
Explanation:
DNA polymorphism helps to study the difference in nucleotide sequence of one DNA in comparison to the standard one.
DNA polymorphism is an important tool to analyze the disease that is caused due an alteration of gene sequence leading to genetic mutation.
Now the altered gene sequence is compared with the normally functioning gene to draw a statistical relationship between altered gene sequence that causes disease with peviously discovered DNA polymorphism.
Outer planets take longer to orbit than inner planets because of the greater distance they need to cover. They also are further from the sun weakening the power of the suns gravitational pull which causes then to orbit slower.
Cnidarians were the first phylum that scientists saw tissue level organization in. Tissue level organization meaning cells all of one type start to function in a unified way.
Migraines are frequent intense aches of the head of neck
that are not caused by another physical disorder. Severe pain may usually be
felt on either one side or both sides of the head. Pain usually is felt in the temples.
Migraine could last for hours or couple of days.
