Which statement is true about the types of chemical elements in living cells? a. animal cells and plant cells contain very different elements b. very few cells contain either carbon or oxygen c. all cells contain the same key elements such as carbon, nitrogen, and oxygen d. single cells organisms have different types of elements from multicell organisms

Is a hamster and guinea pig part of the same species ?

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.

What is used to keep track of the gamates and possible offsprings combination