Janelle made a hypothesis about the uneven temperatures inside her house during winter. she believes that 50% of the heating ducts are blocked, and she plans to investigate. if she wants to prove her hypothesis using scientific processes, what should she do next?

a. make another prediction.
b. state her conclusion.
c. communicate her findings.
d. run an experiment.

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

What type of cell division is used to replace old cell?