how many chromosomes do humans have

  How many chromosomes do humans have?? How about a dog? Check out this video to find out MORE about chromosomes!

  yourself that you just drop looking altogether? Whatever the case, there are gaps in every story that is false or unfinished. And there are gaps. Our DNA have missing Chromosomes. There is a "missing link". Evolution says it took us 65 million years or so to get to the Iron Age, and yet within the past 50 years we have explored space... What is this progress to the future all of a sudden, and whose to say it never existed? We can destory the planet 1000 times over, but just 100 years ...

Question : I have always known that humans have 46 chromosomes, but recently someone told me that we have actually 47 chromosomes. He said we have 46 nuclear chromosomes and one mitochondrial chromosome. Is this true?! Is this mitochondrial genetic information a real chromosome or does it differ in structure/function from the other nuclear chromosomes?! What does scientists say about it?!

Answer : We have 23 pairs of chromosomes, 22 autosomal pairs and 1 sex pair. The mitochondria DNA is not chromosomal, really. It doesn't count for the total as each cell differs in the number of mitochondria it has. Mitochondrial DNA is different in that it contains instructions on making mitochondria only, and doesn't really contribute to the cells mechanisms. That being said, mitochondrial DNA is unique to a maternal lineage, so you can follow a maternal line using it...   More from Yahoo Answers

Question : In diploid organisms, chromosomes appear in pairs in the nuclei of all cells except gametes (sperm or ovum). Gametes are formed during meiosis, where the number of chromosomes in the nucleus is halved: that is, only one member of each pair of chromosomes ends up in a gamete. Humans have 23 pairs of chromosomes. How many kinds of gametes can a human produce?

Answer : apply permutation, as it becomes half , so 23P1 + 23P1 = 46 KINDS OF DIFFERENT GAMETES..   More from Yahoo Answers