The correct answer is positively reinforced.
The positive reinforcement in an operant conditioning incorporates the supplementation of a reinforcing stimulus following a behavior, which makes it more probable that the behavior will take place again in the coming time.
When a favorable reward, outcome, or an incident takes place after an action, then that specific behavior or response will get strengthened.
Skin cells are altered by emphysema
White Blood Cells (WBC), produced by the stem cells found in the bone marrow, manufacture antibodies used to counter the effects of the antigens.
The White Blood Cells are known to provide immunity to the body against foreign bodies like bacteria, virus, proteins, etc. The lymphocyte cells, namely, the B-cells and T-cells are the two key cells that make antibodies for various antigens and kill or lyse the foreign body by recognising the antibiotic marker attach to them.
C. bb because the white allele is recessive
Answer:
Chromosome crossing over in prophase 1 where DNA segments are moved between the homologous pair.
Explanation: