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djyliett [7]
3 years ago
8

which of the following about prokaryotic chromosomes is true? a. comprise at least two chromosomes b. are made of DNA wrapped ti

ghtly around histone proteins c. include histone and nonhistone proteins d. consists of a circular DNA molecule I have doubt that the answer can possibly be (b) and (d)

Biology
1 answer:
Fantom [35]3 years ago
3 0
The answer is, d. consists of circular DNA molecule . The circular DNA is found in bacterias and archeas (which are prokaryotic organisms). The picture shows bacterial chromosome.


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In humans, blue eyes are caused by a recessive allele ("b") that dilutes pigment production. BB and Bb individuals have brown ey
saveliy_v [14]

Answer:

Probability that the son will be:

color-blind = 1/2

blue eyed = 1/8

blue eyed and color-blind = 1/16

Explanation:

Mother : BbXcX

Father : BbXY

Colorblindness is X linked recessive trait hence will be caused when the son has XcY genotype.

XcX   X    XY :

     Xc    X

X  XcX  XX

Y   XcY  XY

Half of the sons will have normal vision and other half will be colorblind hence, there is 1/2 probability that the son will be colorblind.

Eye color is autosomal trait and blue color will be produced when the child has bb genotype.

Bb     X    Bb  :

   B    b

B  BB  Bb

b  Bb   bb

1/4 of the children will have blue eyes. Since half of the children are expected to be males, 1/4 * 1/2 = 1/8 sons are expected to have blue eyes.

Probability of a son being blue eyed and color blind will be :

1/8 * 1/2 = 1/16

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Answer:

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Answer:

From your parents DNA i believe

Explanation:

7 0
3 years ago
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