Which is located at the beginning of a gene?

terminator

mRNA

intron

promoter

A condition involving intellectual disability caused by an extra chromosome in one's genetic makeup is known as

Example of conduction

Which of the following are examples of the environment affecting how genes are expressed? A woman carrier has a son with red-green color blindness A white chicken and a black rooster produce checkered (white & black) offspring.

Plasma cells are antibody factories that are structurally different from b cells with an enlarged golgi apparatus that quickly synthesizes thousands of proteins per second. a. True b. False

3. Why is relying on a short list of major food crops a concern?

Look at the chemical reaction below Magnesium + hydrochloride acid - > magnesium chloride + hydrogen Mg + 2HCI - > MgCI2 + H2 In this reaction Magnesium (Mg) is a reactant or product Hydrogen (H2) is a reactant or product Magnesium chloride (MhCI2)

Where does the primary source of energy needed for life come from? 1) solar energy 2) geothermal energy 3) nuclear energy 4) kinetic energy

Which molecules is not part of the cell membrane? a. lipid b. nucleic acid c. phosphate group d. steriod e. protein?

During dna replication in a human cell, 6 billions bases must be paired properly. which characteristic of dna best allows for high level of accuracy during this process

Which of the following actual (i. e., real) products of biological activity is not likely to be a source of the increases in greenhouse gases observed in recent history? A.