I would agree with your answer of C. As there would need to be calcium to start with and they seem to come from the sarcoplasmic reticulum
Answer:
I think it's A
must lie btn a clearly defined interval
First of all, sex is a type of sexual reproduction. It’s meiosis. In meiosis, it has different stages and one of those stages is called Prophase 1. In prophase 1, genetic variation occurs.
Gene is a sequence of DNA that codes for a specific, detectable product, such as a protein.
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What is a Gene?</h3>
This is defined as the basic physical and functional unit of heredity and occupy a fixed position on a chromosome.
It is also the sequence of DNA that codes for a specific, detectable product, such as a protein or RNA.
Read more about Gene here brainly.com/question/25703686
