How Is Gene Expression Regulated? The amounts and types of mRNA molecules in a cell reflect the function of that cell. In fact, thousands of transcripts are produced every second in every cell.

Scientists are exploring how gene expression patterns and their timing regulate cell differentiation. Today, researchers understand that the specialized, differentiated cell types of the adult ...

An expression is a set of terms combined using the operations +, – , x or \( \div\), for example \(4x − 3\) or \(x^2 – xy + 17\). An equation states that two expressions are equal in value ...

In algebra, letters are used to stand for values that can change (variables) or for values that aren’t known (unknowns). A term is a number or letter on its own, or numbers and letters ...

Ban Ki-moon of the Republic of Korea, the eighth Secretary-General of the United Nations, brings to his post 37 years of service both in Government and on the global stage. Freedom of expression ...

Gerry Baker is Editor at Large of The Wall Street Journal. His weekly column for the editorial page, “Free Expression,” appears in The Wall Street Journal each Tuesday. Mr. Baker is also host ...

Facial expressions are a universal language of emotion, instantly conveying happiness, sadness, anger, fear, and much more. Reading these expressions is essential to compassion and empathy. Take this ...

The answer is yes, indeed. We do not need to look at the scholarly and poetic writings of such acclaimed publishers to see the expression of imagination and figurativeness. Every language is ...

“Step back,” he said. I did as I was told. He started to pat his pants. His expression suggested he was trying to solve a puzzle. His fingers reached into one of his pockets, and he pulled ...

IFEX is a nexus for free expression expertise contributed by over 100 member organisations, spanning 70 countries, and committed to collaboration and transformative advocacy. IFEX’s 2023 Annual Report ...

In his third year leading an Orientation session on academic freedom and free expression, President Christopher L. Eisgruber encouraged transfer and first-year students to make the most of the ...

Mercedes-Maybach recently revealed its latest vehicle, the 2026 SL 680. This is the fourth model in the current lineup of ...