The double-helix shape of DNA.
Answer:
Nervous stimulus action for muscle contraction
Explanation:
Nerve stimulation is sent to the sarcolemma, which are motor nerves at the neuromuscular junction (junction between the terminal part of a motor axon with a motor plate), after which nerve endings implant in the sarcolemma and form plaque on the surface of muscle fibers, which in turn transmit stimulus to the musculature.
Then, an electrical current (from the stimuli) is generated, it propagates through the muscle cell membrane, reaches the cytoplasm and triggers the muscle contraction mechanism.
The expression of genes in an organism can be influenced by the environment, adding the external world in which the organism is or where it develops, as well as the organism's internal world, which includes such factors as its hormones and metabolism.
Answer:
(1) digestion with restriction enzyme,
(2) electrophoresis,
(3) Southern blotting,
(4) hybridization with a radioactive probe,
(5) process with X-ray film.
Explanation:
DNA typing is the forensic analysis of genetic information from a biological sample as an aid to identification.
