Answers: 1
Biology, 21.06.2019 20:30
Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?
Answers: 1
Biology, 22.06.2019 13:10
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
Answers: 2
Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Biology, 22.06.2019 14:30
The process of meiosis produces only gametes, eggs or sperm. according to the diagram, how many sperm are formed from each cell that undergoes meiosis?
Answers: 1
Which one of these facts about space, time and universe is true?...
Arts, 22.12.2020 16:30
Social Studies, 22.12.2020 16:30
History, 22.12.2020 16:30
Mathematics, 22.12.2020 16:30
Chemistry, 22.12.2020 16:30
Mathematics, 22.12.2020 16:30
English, 22.12.2020 16:30
Biology, 22.12.2020 16:30
Mathematics, 22.12.2020 16:30
Chemistry, 22.12.2020 16:30
Mathematics, 22.12.2020 16:30