In the acute phase of HIV infection, the immune system combats the loss of CD4 T cells by producing as many as two billion new T cells a day. This is what model for T cell loss

Abrown coat is recessive in labradors, while a black coat is dominant. if two hybrids are bred, what percentage of the offspring will have black coats? a. 25% b. 50% c. 75% d. 100%