Answer:
D. Gene expression is regulated so that different genes are turned off and on at specific times during development of a multicellular organism.
Explanation:
In biology, cell differentiation is the process by which living cells "specialize" to perform a given function.
This process results from the differential expression of genes and is an ontogenetic process that occurs in the development of multicellular beings. Cells proliferate, differentiate, migrate and interact with each other and with the extracellular matrix, forming different tissues and organs.
In other words, the process of specialization in the cells of multicellular organisms occurs when gene expression is regulated so that different genes are turned off and linked at specific times during the development of a multicellular organism.
To find out if the organisms belong to the same clade, the scientist should look to the phylogentic system of classification.
Explanation:
a) p+e+n=18
mà p=e=z => 2p +n=18
câu a có thiếu dữ kiện không?
Answer:
I'm thinking, they're trying to find how the absence of the alligator will impact the ecosystem. it will cause the ecosystem to rapture because there are no consumers to control the ecosystem. I'm not sure though but this question is similar to when wolves of key stone park left how it impacted the ecosystem