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baherus [9]
3 years ago
12

3. What are some scientific explanations for the history of life on Earth?

Biology
1 answer:
KATRIN_1 [288]3 years ago
7 0

Answer:

Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects

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Can someone please help?
Tatiana [17]
The answer would be A: 1:16 This is because the letters mean: Y: yellow y: green S: round s: wrinkled Thus, because the lowercase letters represent recessive alleles, both letters must be lowercase in order for the gene to show in the offspring. So, if you wanted green, wrinkled, seeds, the only option (in letter form) would represented by: ssyy Therefore, because there is only one block with those letters, and sixteen blocks total, the ratio is 1:16.
5 0
4 years ago
what is the name of the process where the RNA code is changed into an amigo acid sequence and where in the cell does this proces
kvv77 [185]

they change in the ribosomes

7 0
4 years ago
Which of the following proteins is vital to the process of recombination?
anyanavicka [17]

Answer:

The correct answer will be option-A.

Explanation:

Recombination is a process in which the DNA sequences get exchanged between two homologous chromosomes. It occurs during gamete formation and is the basis of genetic diversity.

The process requires many enzymes, the key enzyme of which is Recobinase A or RecA protein which catalyzes the homologous recombination using ATP as an energy molecule.

RecA binds to the single-stranded DNA at the break site and forms pre-synaptic structure. Thus, it initiates the reaction of strand exchange and is the correct answer.

6 0
3 years ago
The dose of insulin required for a meal is usually about 1 unit of insulin per:
Firdavs [7]
Hi the answer is usually about 1 unit of insulin per 15g carbohydrate.
Hope this helps.
7 0
4 years ago
5. What were the good works Jay Prithvi Bahadur Singh did<br> for Nepali people?
olya-2409 [2.1K]

Answer:

Jaya Prithvi Bahadur Singh (23 August 1877 – 15 October 1940), was a humanist, peace advocate, writer and social activist from Nepal. He devoted his life to social welfare and world peace. He is known mainly for humanitarianism, peace advocacy and human rights advocacy for education.

Explanation:

Hope This Helps

Have A Great Day

~Zero~

7 0
3 years ago
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