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irga5000 [103]
2 years ago
9

A particular human disease is caused by a change in one codon in a gene from GAA to GUA. This disease is a result of

Biology
2 answers:
Leokris [45]2 years ago
8 0
1) a substitution mutation
Leno4ka [110]2 years ago
7 0

da ans z a substitution mutation

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why would cactus plants be better able to survive than another type of plant if their environment became drier?​
just olya [345]

Answer:

Cactus plants are able to survive in drier environment because they are able to store water for long periods.

8 0
3 years ago
What are the advantages and disadvantages of using RNA or protein as genetic material?
larisa86 [58]

The most important idea is that the genetic material of any organism must be able to accurately replicate itself at least every generation (or for multicellular organisms at each cell division).  

Base pairing (A-T or U and C-G)allows DNA and RNA (eg in polio virus, see Wikipedia page on RNA dependent RNA polymerase) to create a copy of themselves, when the appropriate enzymes are present. Proteins have no way of making a copy of themselves.  

Stability is probably the main reason DNA is the most common genetic material. DNA has no enzymatic activity and was probably selected for to maintain the integrity of the genetic material (rather than having to perform a function for the cell/virus, during which it may be destroyed). The double helix structure also protects its integrity, and proofreading enzymes have also evolved which correct most of the mistakes made at DNA replication. RNA viruses don't have this mechanism- which could be said to be an advantage (as they can rapidly change and therefore avoid their hosts' immune systems), however in non-parasitic organisms most mutations in a gene would lead to a loss of an essential function and the extinction of that genome.  

I don't think either of these reasons are relevant, but I think the main reasons retroviruses convert their RNA to DNA are so they can use the host cell's replication machinery (this was they do not need to encode as many genes), and secondly they need avoid the antiviral mechanisms of the cell, which would destroy any double stranded RNA molecules found (even if the virus was single stranded, dsRNA would have to be produced at replication).  

7 0
3 years ago
What is the carbon in CO2 used to make
valentinak56 [21]
CO2 makes glucose. <span>Using chlorophyll in the process of photosynthesis, they convert the sun's energy into storable form in ordered sugar molecules such as glucose. In this way, </span>carbon dioxide <span>from the air and water from the soil in a more disordered state are combined to form the more ordered sugar molecules.</span>

3 0
3 years ago
Hello i need help on my last question this question is a bonus point to anyone who answer it
Tema [17]

Answer:

A

Explanation:

A: Venus rotates far more slowly than Earth

Look at the column that says Period of Rotation.

Venus has a rotation period of 243 days.

Earth has a rotation period of about 24 hours.

243 days is much longer than 24 hours, so this is true.

B: Venus's year is longer than Earth's.

The year is also another way to say Period of Revolution.

Venus's is about 224 days.

Earth's is about 365 days.

Venus's is actually shorter, so this is false.

C: Mercury is approximately twice the size of Earth.

Let's look at the Equatorial Diameter column.

Mercury's is 4,880 km.

Earth's is 12,756 km.

Mercury's is much smaller than Earth's, so this is false.

D: All of the above.

Since B and C are both not true, this is incorrect.

Therefore, the correct answer is A: Venus rotates far more slowly than Earth.

6 0
3 years ago
Read 2 more answers
What is one function of proteins
mrs_skeptik [129]

Answer:

It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions.

Explanation:

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3 years ago
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