Answer:
1) Firstly, lets sort out the alleles for the dominant and recessive characteristics. The dominant brown allele will be written as B and the recessive red hair allele will be written as b.
2) Lets sort out the genotype of the parents. The parent having homozygous brown coloured hair will carry the alleles BB. The parent carrying the heterozygous brown coloured hair will carry the alleles Bb.
3) The punnet square from these parents will be drawn as follows:
B b
B BB Bb
B BB Bb
4) Now, lets predict the phenotype of the offsprings. The results from the punnet square show that all of the offsprings will have brown coloured hair.
5) The genotype for the children will have 50% chance to be homozygous brown (BB) and 50% chance to be heterozygous brown (Bb).
A certain drug is made from only two ingredients: compound A and compound B. There are 5 milliliters of compound A used for every 4 milliliters of compound B. If a chemist uses 255 milliliters of compound A, how many milliliters of the drug will be made?
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4:5 is the same as 4x:5x where 4x is compound A and 5x is compound B.
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Solve for "x":
If amount of compound A is 4x = 255
x = 255/4
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Then amount of compound B is 5x = 5(255/4) = 318.75 ml
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Cheers !!!
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Answer:
Saliva contain enzymes.
Explanation:
In the mouth, when chewing a bite of bread, it mixes with the saliva in the mouth which is secreted by the salivary gland. The food is broken down by chewing which is converted into Bolus through the saliva. The saliva comprises of digestive salivary amylase which help to digest carbohydrates and breakdown carbohydrates into smaller pieces.
Bread is a carbohydrate, digestive salivary amylase breakdown bread into sugars.
Therefore, digestion begin from the mouth and it contain saliva which comprises of the enzymes.
True. Because its staying still
I would say that the answer is D.
