Một gen có số lượng nuclêôtit loại G = 20% và có X = 600 nuclêôtit. Gen này có số liên kết hidro là A. 3600 liên kết. B. 3000 liên kết. C. 1500 liên kết. D. 3900 liên kết.

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

During binary fission, what events must occur before the cell splits into two new cells?

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.