The nettle is an example of a plant that may have jagged or smooth leaves depending on the genetic character, the jagged character being dominant over the smooth character. When carrying out cross-pollination, 55 smooth plants and 165 toothed plants were obtained. What is the possible genotype of the plants that were crossed?

dd x Dd.
dd x DD.
Dd x Dd.
DD x Dd.
DD x DD.

Which conditions need to be in balance for cells to function? check all that apply. blood sugar food intake body water body temperature body mass

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e.g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

The organelle pictured is found in cells of and is theorized to have once been an independent organism.