Research why a woman of older age is at a greater risk for chromosomal abnormalities. Relate your answer to the production of eggs and sperm in the human reproductive system. Take notes in your laboratory journal.

The shift of a vehicle's weight around its center of gravity is known as

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.

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi