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valentina_108 [34]
3 years ago
5

2. Wegener’s idea that tidal forces might cause continental drift was shown to be impossible when it was ____.

Biology
2 answers:
Veronika [31]3 years ago
7 0

The correct answer is option B. shown that the tidal forces needed to move continents would stop Earth’s rotation.

The Wegener’s idea that tidal forces might cause continental drift suggested that the tidal force and the centrifugal forces on the earth was the cause of the movement of the plates.

But, he was unable to propose the mechanism of such movement. Also, if the centrifugal force of the earth would move the plates apart, then the earth below it should remain stationary, but the earth is in continuous rotation, so, this idea was not acceptable, as it is would stop rotation of earth.

IRISSAK [1]3 years ago
4 0
The correct answer that would best complete the given statement above would be option B. Wegener’s idea that tidal forces might cause continental drift was shown to be impossible when it was <span>shown that the tidal forces needed to move continents would stop Earth’s rotation. Hope this answer helps.</span>
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The ABO blood group assorts independently of the Rhesus (Rh) blood group and the MN blood group. Three alleles, IA , IB , and i,
Eva8 [605]

Answer:

Part 1:

The mother’s genotype is ii, rr, MN

The father’s genotype is IAIA/IAi, Rr, MM

Part 2:

Approximately 1/32 (3.125%) of children can be expected to have the stated blood types.

Explanation:

Part 1:

The mother has blood types 0, Rh- and MN. Therefore, her genotype has to be ii, rr, MN.

The father has ABO type A. His ABO genotype may therefore be either IAIA or IAi, as both are compatible with type A offspring with a type 0 mother. His Rh genotype must be rr, since his Rh- child necessarily has to have inherited one r allele from each parent. Finally, his MN genotype has to be MM since both alleles are codominant.

Part 2:

Using the given data, we build the following Punnett chart:

                IA R N     IA r N     i R N     i r N    

IA R M

IA R N

IA r M

IA r N

IB R M

IB R N

IB r M                                                    X

IB r N                                                              

Note that, of all 32 possible combinations, only a single one of them (marked with “X” produces a genotype which matches the desired blood type, as follows:

genotype: IBi, rr, MN

blood type: B, Rh-, MN

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Answer:

Specialized structures such as

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Explanation:

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Answer:

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Answer:

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