Answer:
D
Explanation:
results in the release of calcium ions from the sarcoplasmic reticulum.
option D is the 1st process that starts the excitation-contraction coupling.
I think the correct answer is in the egg. It is in the egg, the embryo development take place in oviparous animals. Oviparous animals are animals that lay eggs. This is the reproductive method of most fish, reptiles birds, and amphibians.
Now I believe the answer is LlBb and llBb
The options of the given question are:
method for DNA delivery
gene construct
efficient selection strategy
tissue culture system
Answer: Tissue culture system.
Explanation:
The role of tissue culture system is not much in case of the transgenic plant. The method of DNA delivery, efficient selection strategy and gene construct are involved in the plant transformation.
But plant tissue culture is not directly involved in the plant transformation. The plant tissue culture is the collection of the techniques which is used to maintain the growth of the plant cells and so it does not plays any important role in plant transformation.
The plant transformation is the introduction of the desired characters into the plant and then the growth of transformed plant takes place in the culture medium. This has no role in the plant transformation or has less role.
Cyanobacteria were the first.