When two or more gene loci contribute to a phenotype in an additive way, the result is what type of variation?

Synapsis occurs when what come together in prophase I?

Tall is dominant to dwarf in pea plants. If two dwarf pea plants were crossed, their offspring will be: 

Identical copies of a chromosome.

After correctly transcribing the DNA sequence above, another BIOL 190 student then translated the resulting mRNA and gave the following answer: phenylalanine, lysine, tryptophan, methionine, tyrosine, arginine, asparagine, alanine, leucine, threonine, isoleucine, leucine, tryptophan, arginine, glutamate Is this correct?

Once two tRNAs are attached to the mRNA within the ribosome, what will happen next?

DNA polymerase can only add nucleotides to the free 3’ OH of another nucleotide.

In building the lagging strand, what enzyme  joins the Okazaki fragments?

The failure of chromosomes to separate normally during meiosis is called:

During which stage of mitosis do replicated chromosomes condense and the nuclear envelope disappears?