Check my answers? Reproduction and Development?
All living things and their cells reproduce to make new organisms and new cells. Reproduction of organisms can be sexual or asexual. Asexual reproduction produces offspring that are identical to the parent. Sexual reprodution involves two parents and produces offspring that are genetically different from their parents. There are two basic types of cells: body cells and sex cells, or gametes. Each species has a specific number of chromosomes. Body cells have two of each type of chromosome. Gametes have one of each type of chromosome, or half the number that body cells have. A chromosome is a single long strand of DNA tightly wound around certain proteins. A gene is a segment of DNA that tells a cell to make a specific protein or part of a protein.
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Sexual reprodution involves two parents and produces offspring that are genetically different from their parents. A gene is a segment of DNA that tells a cell to make a specific protein or part of a protein. better: Sexual reprodution involves two PARENT CELLS and produces offspring that are genetically different from their parents. A gene is a segment of DNA that ENCODES FOR a specific protein or part of a protein.
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Oh, one additional: Body cells have two of each type of chromosome. Gametes have one of each type of chromosome, or half the number that body cells have. better: Body cells have two of each chromosome. Gametes have one of each chromosome, or half the number that body cells have. because: type of chromosome really comes down to autosomes and sex chromosomes. that would be misleading.
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