Answer:
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.
Answer: the correct answer is Proteins destined for the ER are translated by cytosolic ribosomes and are targeted to the ER when a signal sequence emerges during translation.
Explanation:
ER means Endoplasmic Reticulum and it works as a manufacturing and packaging system.
Through natural selection it happened over many generations and it was gradual, not a sudden change in the founder species. One bird was randomly born with a fatter beak and so could eat a seed that was harder to crack, this meant he lived longer than the other birds or was fitter, so bred more and so more of the offspring had this slightly larger beak. This continued and the birds moved to the islands with their ideal seed and kept getting fatter beaks etc until they were no longer the same species (this is when they can't breed to produce fertile offspring).
<span> DNA sickle hemoglobin is a result of a point mutaion in one base rna changes from gag to gug protein amino acid level changes amino acid from glu to val. </span>
You can preven biotechnology many ways. one of the major ways you can prevent it is to make sure you always watch. omens said that