Marsupials give birth to live offspring as well as undeveloped offspring that need to be in the pouch
Ethyl methane sulfonate is a chemical mutagen that modifies bases in DNA. This agent causes C to be mutated to T
Answer:
genetic drift
Explanation:
When genetic drift happens, a random allele becomes more common just by chance. Unlike natural selection, there is no benefit from the random allele that helps the organism to have a better survival rate in genetic drift. It simply coincidence without any cause. Genetic drift will less likely happen if the population bigger compared to a smaller population.
Answer:
The correct answer is option b. "multiple enzymes of the particular pathway".
Explanation:
A polycistronic mRNA is defined as a single mRNA molecule that encodes for multiple proteins. Bacteria has developed the capacity of synthesizing polycistronic mRNAs from operon genes in order to encode for multiple enzymes of a particular biological pathway at the same time. This adaptation helps the bacteria to quickly start the biological pathway needed at the moment, which is particular useful when it faces stressful conditions.
Two important checkpoints that regulate the cell's progression through the cell cycle occur in the G1 and G2 phases of the cell cycle.
G1 (restriction) checkpoint - the cell becomes committed to entering the cell cycle
G2 checkpoint - chromosomes have replicated successfully.
