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lions [1.4K]
3 years ago
15

What evidence do scientists have that Pangaea existed?

Biology
1 answer:
Allushta [10]3 years ago
7 0

There are three things.... The margins of the drifting continents, the existence of matching rock types and formations and the presence of similar fossils on opposing edges!

Hope this helps ya out! :)

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Select all the correct answers.<br> Which two statements are true for the leading strand in DNA?
Ghella [55]

Question: Which two statements are true for the leading strand in DNA?

It is synthesized toward the replication fork.

It is synthesized in the 3′ to 5′ direction.

It is synthesized away from the replication fork.

It is synthesized in the 5′ to 3′ direction.

Answer:

The two statements that are true for the leading strand in DNA are "it is synthesized toward the replication fork and it is synthesized in the 5′ to 3′ direction"

Explanation:

Leading strand in DNA is the strand of new DNA being synthesized in the same direction where the replication fork is moving. The movement of replication fork allows the access of template for the new DNA. The DNA synthesis is continuous in the leading strand. It is synthesized in the 5' to 3' as DNA synthesis always takes place in this direction. This is because dNTP ( deoxyribonucleoside triphosphate) provides free 3' OH group where new dNTP can be added by the enzyme DNA polymerase.

3 0
3 years ago
Let P = purple flowers and p = white, and T = tall plants and t = dwarf. What combinations of gametes could be produced by a het
kirill [66]

Answer:

The combinations of gametes that could be produced from heterozygous individuals for both traits are PT, Pt, pT and pt.

Explanation:

An individual is heterozygous for two traits, flower color and stem height, with a PpTt (dihybrid) genotype and a phenotype showing the dominant traits, purple flowers and tall stem.

The genes of this individual for the above-mentioned traits contain different alleles, and taking into account the independent segregation of characters, the alleles present in its gametes could be:

  • <em>Both dominant alleles: PT </em>
  • <em>One dominant and one recessive allele Pt or pT </em>
  • <em>Both recessive alleles: pt </em>

Therefore, the traits of its offspring will depend on the alleles for those traits present in the gamete to which they are combined.

6 0
3 years ago
Type of very specific antibodies produced from a population of identical cells
nikdorinn [45]
The answer is called monoclonal. Hope this helps and please don't forget to thank me.
6 0
2 years ago
Which of the following could be represented with a model?
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Answer:

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3 years ago
At what pH values is pepsin likely to be denatured?
san4es73 [151]
Above a pH of 7, pepsin becomes irreversibly denatured. Pepsin was the first enzyme to ever be discovered, and it was discovered by <span>Theodor Schwann.</span>
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3 years ago
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