The Mitral valve which is also known as left atrioventricular prevents blood movement from left ventricle to left atrium.
Explanation:
- Human heart is four chambered.
- Two of these are receiving chambers known as atria and the other two are distributing chamber known as Ventricles.
- Atria are superior chambers and ventricles are inferior chambers.
- The heart has four valves broadly grouped as Atrioventricular valves and Semi lunar valves.
- Atrioventricular valves allows flow of blood from atria to ventricle. These are tricuspid valve and bicuspid valve.
- Semi-lunar valves allow blood to pass out of the heart. These include the pulmonary and aortic valves.
- The pulmonary valve allows blood to flow from right ventricle to the heart while aortic valve allows blood to flow from left ventricle to the Aorta.
- The Tricuspid valve located between the right atrium and right ventricle allows blood to flow from right atrium to the right ventricle.
- The Bicuspid valve ( Mitral valve) located between the left atrium and left ventricle allows the blood flow from left atria to left ventricle.
- Valves maintain the unidirectional flow of blood and thus prevent its back flow.
Answer:
Framshift mutation
Explanation:
The frame shift mutation is also known as reading frame shift or framing error mutation, during which an insertion or deletion occurs at a single position but it effects the sequence of whole gene in such a way that complete sequence is disturbed.
If we look at the sequence given in example:
Wild sequence: the big red fly had one eye
Mutant: the fbi gre dfl yha don eey
An insertion mutation occured at the start of sequence big, where f got inserted. We know that a 3 set of nucleotides called codon is transcribed and translated into single amino acid of protein. So when f got added it disturbed the frame and all the sequences of next codons got altered.
- big changed to fbi
- red changed to gre
- fly changed to dfl
- had changed to yha
In short the ehole protein will have wrong sequence of amino acid and it is worst type of mutation that badly effects an organism.
Hope it help!
<span>The ability to choose a mate does improve offspring fitness in fruit flies. The choice made by the female fruit fly is based on a recognition pattern of the male's ability to highlight its potency and "genes".
As a conclusion, the better the male's genes, the better the offspring's fitness.</span>
Answer:
the word diverge means in the explanation below
Explanation:
The two roads diverged into a fork in the road, meaning that the roads went in two separate directions. The “yellow wood” means the poem is set in autumn. This also means there were leaves on the ground that might have obscured tracks in the roads. The speaker has come to two roads in a wood. He has to choose one.
