In the C and C++ programming languages, #pragma once is a non-standard but widely supported preprocessor directive designed to cause the current source file to be included only once in a single compilation.
During sexual reproduction, fertilization of the ovum (n, 23 chromosomes) by the sperm (n, 23 chromosomes) restores the diploid number and creates a zygote (2n, 46) (awww..) that divides and grows by mitosis to form a multicellular human.
In meiosis, the chromosome count is reduced from diploid to haploid; the union of two haploid gametes in fertilization restores the diploid chromosome count. Dog sperm contain 39 chromosomes. What are the haploid number and diploid number for dogs. Haploid number (n) is 39; diploid number is (2n) is 78. What process (meiosis or mitosis) is more directly involved in the production of gametes in animals? In plants and most fungi.