Gamete cells contribute to offspring because through meiosis, haploid cells with half of the chromosomes are created. They increase genetic variation by combining with the cell from the other organism. This contributes to offspring because they get good traits from both parents rather than being genetically identical to just one.
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Eubacteria are enclosed by a cell wall. The wall is made of cross-linked chains of peptidoglycan, a polymer that combines both amino acid and sugar chains. The network structure gives the wall the strength it needs to maintain its size and shape in the face of changing chemical and osmotic differences outside the cell.
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4. No enzymes capable of attaching galactose or N-acetylgalactosamine to the end of the oligosaccharide chain on RBC membrane glycolipids
Explanation:
- Glycolipids are membrane components that are composed of lipids which are covalently bonded to polysaccharides or monosaccharides.
- Glycolipids found in human red blood cells are involved in the ABO blood antigen types.
- Blood group O individuals have antibodies against the type A and type B antigens.
- <u><em>Individuals with blood type O lack enzymes capable of attaching galactose or N-acetylgalactosamine to the end of the oligosaccharide chain on RBC membrane glycolipids.</em></u>
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i think the first one the third one and the fourth one
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