Answer:
The correct answer will be option A - A-band.
Explanation:
The sarcomere is the repeating unit of a myofibril which extends between two z-lines. Under a microscope, a sarcomere can be divided into A- band which is composed of thick myosin only and I-band which consists of thin filament that is actin only.
When a muscle contract then actin and myosin comes in overlapping position due to which I-band shortens and between two z-lines and overlapped structure of thin actin filaments over thick myosin filaments (A-band) is seen.
Therefore, only A-band is seen between two z-lines in a contracted muscle thus, option A is the correct answer.
Casting rope is the answer
Answer:
There is a low probability that a future pregnancy would exhibit similar phenotypes since it probably was a germinative line mutation that affected that egg.
Explanation:
The malformations of the unborn child, probably are due to a mutation in the germ cell of any or both parents. Germline mutations are detectable changes in a sperm or egg that we can see when the fetus is growing, as malformations since the original germ cell that was mutated divided itself to give more mutated cells for all the different parts of the fetus.
the correct spelling is option A.) Retinopathy the prefix is retin or retino
