Answer:
If twins are a boy and a girl, clearly they are fraternal twins, as they do not have the same DNA. A boy has XY chromosomes and a girl has XX chromosomes. Girl-boy twins occur when one X egg is fertilized with an X sperm, and a Y sperm fertilizes the other X egg.
Explanation:
Answer:Under a microscope the cells of mushrooms, plants, and animals all have visible nuclei animals, because both animals and fungi have to consume living things to get energy and nutrients, whereas, plants use sunlight to make their food.
Slope is possibly the correct answer
Answer:
23
Explanation:
At the end of meiosis-I, two daughter cells are formed having half the number of chromosomes present in diploid cell undergoing meiosis. Each cell has half the number of chromosomes present in the diploid cell.
Explanation:
While most snakes and lizards in North America are not poisonous, a few species can seriously injure or kill someone with their venom if the bite isn't treated quickly. They include the rattlesnake, copperhead, cottonmouth, coral snake, Gila monster, and Mexican bearded lizard.
