Create three relevant questions that you would like answered or clarified about the role of dna and chromosomes. focus on the following areas as you generate questions: i. the cause and effect relationship between the genetic code and gene expression ii. mechanisms of gene regulation iii. the role of dna segments that do not code for proteins

1) How is DNA compacted to form a chromosome?

2) How to cells undergo differentiation to form the numerous types of cells in the body?

3) What are some functions for non-coding DNA [e.g. Centromere, telomere, promoter, terminator, silencer, enhancer, introns (alternative splicing)]

Explanation:

1) involves packing of DNA that involves DNA associating with H1, H2a, H2b, H3, H4 histone, scaffolding proteins and link genes)

2) since all somatic cells are genetically identical, differentiation involves silencing certain genes through different chemical signals that the stem cell's environment is in, resulting in certain genes related to its function being expressed while other genes are silenced.

3) non coding sequences although the bulk of DNA, has numerous importsnt roles. ( centromere allow for association of kinetochore proteins to form kinetochore that acts as site of attachment for microfibrils during mitosis or meiosis) (telomere act as sacrificial DNA that prevents erosion of Coding DNA during every round of semi-conservative DNA replication)...

phosphorus cycle

explanation:

the phosphorus cycle is the way that compounds of the element phosphorus, an essential nutrient, are recycled in the environment. plants absorb phosphorus compounds from the soil, and decaying organic matter, including both plant matter and animal droppings, returns it to the soil. phosphorus is a vital part of atp, the energy currency of all cells, and is vital to all forms of life.