Answer: A) Black trait is dominant
B) The genotypes of the parents must be Bb
Explanation: Let B represent the allele for black colour and b represent the allele for white colour. If the offspring between 2 black mice show the ratio of 3 black mice to 1 white mouse, it then means that the two parents are heterozygous for black colour, that is each of them have one allele for black colour (B) and one allele for white colour (b). They both have a genotype of Bb.
Bb x Bb = BB, Bb, Bb, and bb.
This means 1BB : 2Bb : 1bb
BB is black, Bb is black while bb is white which gives a ratio of 3 black mice to one white mouse. For Bb to manifest as black, it means that B is dominant to b.
Answer:
C. Yes. Nonpolar molecules aren't compatible with water.
Explanation:
Blood has the liquid plasma, a watery medium. Fats are nonpolar and can not enter the bloodstream as such. The long-chain fatty acids and monoglycerides enter the absorptive cells of the small intestine and form the triglycerides again.
These triglycerides are packed into chylomicrons by making aggregates with phospholipids and cholesterol and become covered with proteins. These packed fats enter the bloodstream in the form of chylomicrons.
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