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emmasim [6.3K]
2 years ago
12

The principles of probability can be used to

Biology
1 answer:
lana66690 [7]2 years ago
3 0

Answer:

predict the outcomes of genetic crosses.

Explanation:

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Explain how the water vascular system allows an echinoderm to move along the ocean floor. Please help!
astra-53 [7]

Answer: Sea stars move using a water vascular system. Water comes into the system via the madreporite. It is then circulated from the stone canal to the ring canal and into the radial canals.

Explanation: The radial canals carry water to the ampullae and provide suction to the tube feet.

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3 years ago
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In tissue from the intestinal epithelium of a frog, the following proportions of cells were found at each stage of the cell cycl
Alex777 [14]

Answer:

Interphase 0.90 = 18 Hours

Prophase 0.04 = 48 Minutes

Pro-metaphase 0.02 = 24 Minutes

Metaphase 0.01 = 12 Minutes

Anaphase 0.02 = 24 Minutes

Telophase 0.01 = 12 Minutes

6 0
3 years ago
When a horse and a donkey have an offspring, it is called a mule--a hybrid that cannot reproduce itself. Why are horses and donk
RUDIKE [14]

Answer:

Horses and donkeys are two different species but belong to the same family Equidae and the genus Equus. They both have different numbers of chromosomes.

Although they look quite similar in appearance, there are many dissimilarities.

The physical differences between horses and donkeys include:

Donkeys backs are flatter than horses.

Donkeys have smaller hoofs than horses.

Donkeys have longer and thicker ears than horses.

Horses tend to have a long face than Donkeys.

Horses have six vertebrates, while donkeys have only five.

Tails of horses and donkey differ. Horses have long tails, whereas donkey’s tail looks like a cow’s tail.

On the genetic level, the total number of chromosomes in the horse is 64 and donkey have 62 number of chromosomes. Mule is a hybrid of a female horse and a male donkey. Hinny is a hybrid of a female donkey and a male horse. Both the offspring (hybrid offspring) produced by donkeys and horses are infertile, sterile, cannot have its own offspring and both have 31 pairs of chromosomes each.

If the produced offspring is fertile then the animals are of the same species and if the produced offspring is sterile then they are of different species. Because of this, both horses and donkeys are considered as a separate species. A species is generally defined as a group of organisms, which are capable of interbreeding and creating viable offspring. In this case, mule and the hinny are not really a new species and are produced by two different species.

4 0
3 years ago
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Why is RNA polymerase a good name for the enzyme that carries out transcription
KATRIN_1 [288]

Answer:

RNA Polymerase plays an important role in the process called transcription which result in the in the synthesis of RNA from DNA molecule.

Explanation:

RNA polymerase helps in the addition of ribonucleotides in the growing RNA strans that is synthesized from template DNA .

      one ribonucleotide is joined to the adjacent ribonucleotide by the formation of phosphodiester bond.

      RNA polymerase is named so because this enzyme helps in the polymerization of ribonucleotides leading to the formation of a Primary RNA transcript.

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3 years ago
The least-equipped organisms may not survive True False
Mademuasel [1]

Answer:

True

Explanation:

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