Answer:
a. GC->CG in the protein coding region on a gene. - Base substitution
b. GC->TA in a GAA glutamate codon - Base substitution
c. Loss of three bases GAA for a glutamate codon - Deletion
d. GC->CG in a tRNA gene - Insertion
e. GC->AT in the ribsome binding site of a mRNA - Frameshift mutation
Explanation:
DNA mutation occurs as a result of a change in the gene sequence of the protein being coded by the genes. Several causes of mutation involve radiation, heavy metal exposure, etc. There are different types of gene mutation. These include a deletion where the bases are deleted. Another one is the insertion where a base is inserted into the sequence. This lengthens the base sequence of the gene. Another mutation is the base mutation -this can take place as a result of inversion. Inversion reverses the order of the bases in a sequence like this: normal CGGA → AGGC
These mutations result in disorder e'g Downs syndrome, Puckingtons disease, Cystic fibrosis etc.
Explanation:
The major blood vessels that are connected to the heart include the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs, where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the heart) and the coronary arteries (which supply blood to the heart muscle).
Answer:
All plants and animals need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use.
Explanation:
When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.
Answer:
D is the answer
Explanation:
Nerve is both part of nervous system and pathway to transport nerve impulse which is information in ur body
Answer: This is actually a fairly common question, the answer is <u>air quality across the country will improve.</u>