Answer:
C. Aa and aa
Explanation:
The question tell us that shaded symbols represent individuals who express a dominant trait (or phenotype). This means that symbols that are not shaded represent individuals who express a recessive trait (or phenotype).
A dominant allele (A in this case) will always mask a recessive allele (a in this case) when present and be shown in the organism's phenotype. Therefore genotypes AA and Aa, which both contain the dominant allele A, will both result in dominant phenotypes, while the genotype aa will result in a recessive one due to the absence of a dominant A allele.
Looking at the pedigree chart we can see that individual 1 has a dominant phenotype, and individual 2, a recessive phenotype. Since the only way for an organism to have a recessive phenotype is to only have recessive alleles, organism 2 must have genotype aa. Similarly organism 1 must have at least one dominant A allele, therefore C is the correct answer.
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Answer:
Brushing too hard can erode the enamel on your teeth and cause gum recession. Many electric toothbrushes can solve this problem, too. They have pressure sensors that warn you if you're pressing too hard. That way, you can develop a proper touch that will remove plaque, but not damage your teeth and gums.
Explanation:
Electric toothbrush bristles vibrate or rotate to help you remove plaque buildup from your teeth and gums. The vibration allows for more micro-movements every time you move your toothbrush across your teeth
Answer:
All carbohydrates have the general formula Cn(H2O)n
Explanation:
The basic unit of carbohydrates-monosaccharides have the formula C
nH
2nO
n while the basic general formula of carbohydrates is Cm(H2O)n .
Monosaccharides are basic units (components) of carbohydrates. Those are simple sugars such as glucose, fructose, galactose. Two monosaccharides can join together via glycosylic bond and make disaccharides. Some of the disaccharides are: sucrose (glucose + fructose), lactose (galactose + glucose), maltose (glucose + glucose).
Disaccharides can be broken down to monosaccharides by an enzyme called a disaccharidase.
Longer chains of monosaccharides form oligosaccharides (usually as glycolipids ) and polysaccharides (starch, glycogen,cellulose, chitin).
Carbohyrates are important biomolecules included in metabolism, energy storage, they are also structural components, have role in immune response, as coenzymes etc.
Golgi Apparatus is the recycling center of the cells
Answer:
The chloroplast
Explanation:
The chloroplast is a plant-specific organelle that is the site of photosynthesis. Photosynthesis is the process through which the plant synthesises sugar using the energy from sunlight, carbon dioxide, and water, and releases oxygen as a byproduct. The photosynthesis reactions occur in the chloroplast.