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Alex_Xolod [135]
3 years ago
10

How are proteins built using the information provided by a molecule of RNA?

Biology
2 answers:
bonufazy [111]3 years ago
7 0
<span>a mRNA translates a dna to rna and goes to a ribosome a tRNA reads it and attaches it to a rRNA to make a protein</span>
anastassius [24]3 years ago
7 0

Answer:

The RNA helps in the determination of the sequence of amino acids in proteins and polypeptides by a two-step procedure, that is, the transcription of DNA, which generates mRNA in the nucleus, and the translation of the mRNA to tRNA occurring at the ribosome in the cytoplasm.  

The association of ribosomal RNA takes place with a set of proteins to produce ribosomes. These composite structures move physically along the molecule of mRNA and catalyze the arrangement of amino acids into protein chains. They also associate with tRNAs and different other accessory molecules that play an essential role in the synthesis of protein.  

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Populations evolve for many reasons. Suppose there is a population of plants that have either purple flowers or white flowers, a
sattari [20]

Answer: natural selection

Explanation:Natural selection, gene flow, gene drift and mutation are the mechanisms for EVOLUTION.

The dominant purple allele must have been acquired from previous parent gene, by natural selection

Definitely the available   alleles from previous flower population were white and purple flowers. But, because the parents of purple flowers exhibit VARIATION, in their gene pool,  they showed dominance over  the recessive white colour flowers in the same population.  

◼ from Darwin’s observation and deduction, Organisms who acquired certain characteristics from variation  tend to survive than others, and therefore pass these inheritable characteristics to their offspring.

◼Thus the purple flowers dominated the population for the available resources, among the other flowers colours, (competitions) therefore it leads to a stable population in size after a period of time., while the white colour flowers are recessive

◼Darwin concluded that, variants of best adaptation will be selected for by natural conditions operating in the environment of the population at that particular period (natural selection).

Based on this, natural selection takes place, and the purple flowers with best variation will have selective advantage (dominance)above white colour flowers(recessive).

Consequently, they have higher survival rates compare to white flowers in the population this is   survival of the fittest by natural selection of purple flowers

The frequency of the white colour flower will reduced because of less manifestation of traits from generation to generation from reduced gene pool due to recessive trait, however the frequency of Purple flower will increase because the number of copies of allele of purple flowers is greater than the total number of all the flowers population( white flowers+purple)

5 0
3 years ago
Which genetic variation is shown below?
Leno4ka [110]

Answer:

This Punnett square shows<u> incomplete dominance.</u>

Explanation:

The homozygous red flower has two dominant red alleles, and these are represented by the letters RR. The homozygous white flower is represented by rr. Their offspring are all heterozygous Rr, and they have pink flowers. This is the first filial generation, or F1. When the F1 generation cross-pollinates, their offspring will be RR, Rr, and rr in a 1:2:1 ratio. Some of their offspring (the F2 generation) will inherit two R alleles, some will inherit two r alleles, and some will inherit both.

Hope this help

plz mark brainliest

Have a nice day!!!!

3 0
2 years ago
Explain the role of a hypothesis in a scientific investigation.
k0ka [10]

Answer:

A hypothesis is a testable proposition

used to explain scientific phenomena. It

may be based on previous observations

(a sort of educated guess) or it may

simply be a hunch. Most scientific

hypotheses are combinations of

observation and intuition. The important

thing is that the hypothesis be testable.

If the hypothesis is disproved through

testing, then it is discarded and a new

hypothesis is proposed. If the hypothesis

stands up to rigorous testing, then our

faith in the hypothesis is increased.

This system of careful, rigorous, and

unbiased testing of a hypothesis is what

characterizes the scientific method.

Hope it helps!

4 0
2 years ago
What are trade winds?
Sever21 [200]

Answer:

The trade winds or easterlies are the permanent east-to-west prevailing winds that flow in the Earth's equatorial region (between 30°N and 30°S latitudes). ... The weaker the trade winds become, the more rainfall can be expected in the neighboring landmasses.

Explanation:

8 0
3 years ago
The survival of any species depends on variation among its members. Which of the following prodcues the LEAST variation in a spe
Harman [31]

Answer:

asexual reproduction

Explanation:

because every single organism in the species is the exact same genetically, there is no variation between them.

4 0
2 years ago
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