1) The chain of eukaryotic hemoglobin is composed of 141 amino acids. What is the minimum number of nucleotides in an mRNA coding for this polypeptide chain? Assuming that each nucleotide is 0.34nm long in the mRNA, how many triplet codes can simultaneously occupy space in a ribosome that is 20nm in diameter
2) The synthesis of flower pigments is known to be dependent on enzymatically controlled biosynthetic pathways. Postulate the role of mutant genes and their products in producing the observed phenotypes in the crosses shown
a) P1: white strain A x white strain B
F1 : all purple
F2 : 9/16purple, 7/16wite
b) P1 : white x pink
F1 : all purple
F2 : 9/16pruple, 3/16pink, 4/16white
2007-03-27 18:39:29 · 1 answers · asked by Lilac 2 in Science & Mathematics ➔ Biology
i got similar question in my bio assignment.
im also waiting for answers.
2007-03-28 00:38:49 · answer #1 · answered by prey of viper 3 · 0⤊ 0⤋