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gamete-sexual organ or germ cell more variability (crossing over) 23 pairs of chrosmosomes plus sex chromosomes XX male, XY female 2 cells miosis i, 4 cells meiosis ii the random assortment of chromosomes during the production of gametes, the results are genetically unique individual gametes 46 chromosomes in a zygote 23 from sperm, 23 from egg meiosis enables all organisms that reproduce sexually to do so without continually multiplying the amount of DNA in the nucleus
1. Sex cell 2, Two sets of chromosomes so lethal allele's may not produce undesirable effect. 3. DNA and Chromatin. 46 total(23 pairs). 4. XY XX 5. 2 and 4 6. 7. 2 each parent donates 1 chromosome/gene 8. to produce a cell that contains only one copy of each chromosome
Biology questions, involving meiosis and sexual reproduction? -What kind of cell is a gamete? -What is the advantage of sexual reproduction? -What are chromosomes made of and how many are there in a human somatic cell in total? -What combination of sex chromosomes results in a boy? In a girl? -How many cells are present at the end of meiosis I? at the end of meiosis II? -What is independent assortment? -When a sperm & egg fuse to make a zygote, how many copies of each chromosome and each gene will be found in the zygote? Why? -Why is meiosis necessary for sexual production? Thanks in advance .
Biology questions, involving meiosis and sexual reproduction?
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