Which of the following is a true statement about codons?

A.

A codon is a sequence of four nitrogenous bases.

B.

A codon is a sequence of three amino acids.

C.

In translation, an mRNA codon is recognized by its complementary amino acid.

D.

In translation, an mRNA codon is recognized by its complementary tRNA.

D in translation, an mRNA codon is recognized by its complementary tRNA

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !