True or False. Explain your reason for each statement. 1.The maternal effect imp

Question

True or False. Explain your reason for each statement.

1.The maternal effect implies that the offspring’s genotype is not relevant in regard to the phenotype that it displays. This is because certain proteins from the mother are determining which biochemical reactions and genes are activated in the embryo.

2. Bacterial genomes have a single origin of replication to which DNA polymerase binds. Unique promoters at this site only recruit the DNA polymerase when the cell has sufficient resources.

3.Polymerase chain reaction requires DNA polymerase, DNA template, primers, and dideoxyribonucleotides (ddNTPs). After multiple rounds of the reaction, an exponential amount of product is produced.

Explanation / Answer

1. True. Maternal effects occur when the egg is supplied by the mRNA and proteins of the mother, since the egg belongs to the mother, but only the nucleus of the sperm enters the egg.

2. False. Promoters do not recruit the DNA polymerase. The Ori-site does this. Promoters recruite RNA polymerases.

3. False. The nucleotides needed for PCR are 'Deoxy-nucleotide triphosphates' (dNTPs). ddNTPs cannot extend a polynucleotide chain as they lack the 'O' atom needed for a phosphodiester bond.

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