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notsponge [240]
2 years ago
8

HELP FAST ... every cell in the human body contains a nucleus with DNA, but what is the origin of that DNA!?​

Biology
1 answer:
ira [324]2 years ago
6 0

Answer:

I think the answer is RNA

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What does water do for the plant during germination​
kirill115 [55]

Answer:

Water is required for germination. Mature seeds are often extremely dry and need to take in significant amounts of...

Oxygen is required by the germinating seed for metabolism. Oxygen is used in aerobic respiration, the main source of the...

Temperature affects cellular metabolic and growth rates. Seeds from different species and even seeds from the same plant.

Explanation:

3 0
2 years ago
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The fertilization in<br> frog<br> is called external fertilization.Why?​
spayn [35]
Answer:

External fertilization usually occurs in aquatic environments where both eggs and sperm are released into the water Most external fertilization happens during the process of spawning where one or several females release their eggs and the male(s) release sperm in the same area, at the same time.
Typically, frogs lay eggs. This process usually occurs through external fertilization, where the female releases her eggs from her body into water. Then, the male releases his sperm to fertilize them In this case, the eggs are fertilized inside the female's body before they are released.
4 0
2 years ago
How does oceanic crust move along mid ocean ridges
77julia77 [94]

Question: How does oceanic crust move along mid ocean ridges

Answer: Oceanic crust slowly moves away from mid-ocean ridges and sites of seafloor spreading

Explanation: as a result it becomes cooler, more dense, and more thick.

question answered by

(jacemorris04)

6 0
2 years ago
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You are examining the phylogenic relationship of a newly discovered plant species (Species 2). You amplify the RUBISCO barcode a
frozen [14]

Answer:

a. Inversion

b. Duplication

Explanation:

Inversion has the name suggest, has to do with a segment of DNA being reversed from end to end.

In this case here,

Inversion is taking place here.

species 1 ATGCAAATTTGGGCCCATGAATGGTTGCAA

species 2 ATGCAAAAATTTTGGTACGCCGAATGGTTGCAA

Therefore, the sequences in bold in species 1 are observed to be reversed end to end in species 2.

Deletion ❌❌

I am sure it's not feasible because deletion entails removal of a few sequences.

It can be seen that species 2 is longer than species 1, which gives another reason why deletion is not feasible too, as no sequences are seen to be deleted.

I believe duplication is feasible since AATT sequences are repeated once.

Our final answer,

inversion and duplication occur here.

4 0
2 years ago
A serve flood brings a lot of sediment and silt into the black river. The oxygen of the river decreases greatly. What is the r l
Tom [10]

Answer:

oxygen

Explanation:

A limiting factor is any condition whose decrease, increase, absence or presence is able to limit/stop population growth. Examples of limiting factors include abiotic conditions (e.g., temperature, water, oxygen, CO2, etc) or biotic conditions (e.g., food, mate, etc). There are many aquatic species that require high levels of oxygen (e.g., fish), thus being it a limiting factor for these species.

7 0
3 years ago
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