Where do convection currents take place? Is it in the lithosphere or the asthenosphere?

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

Across of blue x blue (both heterozygous) would result in

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed