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masya89 [10]
3 years ago
6

Which of the following is a correct statement? Select one:

Biology
1 answer:
sergey [27]3 years ago
3 0

Answer:

The correct answer is a if you want to make a cDNA library it does not matter which tissue you isolate the mRNA from.

Explanation:

cDNA is also called complementary DNA is generated from mRNA molecule by the process called reverse transcription with the help of reverse transcriptase enzyme.

    During the formation of cDNA library at first mRNA is being isolated from a cell but it does not matter from which cell the mRNA is isolated because cDNA library is not specific for any particular mRNA present in a cell.

   In a library there are various types of books.A library is not specific for a single type of book by the same way cDNA library is not specific for a single type of mRNA.

   

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What is the main function photosystem?​
o-na [289]

Answer:

Explanation:The Photosystems are the functional centers of photosynthesis. The pigments, such as chlorophyll, in the photosystems absorb light energy, which excites electrons. These electrons are transferred to electron-accepting molecules, eventually producing ATP and NADPH.

3 0
3 years ago
A skeletal muscle is described by all of the following except: question 2 options: voluntary attached to a bone having an origin
Oduvanchick [21]
The skeletal muscles are considered voluntary muscles and are mostly located in all parts of the human body. Therefore, these are the muscles that are attached to the bones and have an origin but are NOT highly branched. The skeletal muscles are the UNBRANCHED ones whereas, it is the cardiac muscles that are considered branched.
7 0
3 years ago
Why do identical twins have the same physical characteristics, whereas regular siblings are not identical?
jonny [76]
It’s because unlike twins the regular siblings aren’t born on the same date or a couple minutes apart, but rather a couple years old or younger.
8 0
3 years ago
Which of the following is an abiotic factor that shapes a marine ecosystem? a. fish c. depth b. kelp d. coral
olasank [31]
Answer: c depth hope it helps!
5 0
3 years ago
In guinea pigs hair straightness or curliness is thought to be governed by a single pair of alleles showing incomplete dominance
Nimfa-mama [501]

Answer:

Frequency of allele S is p = 0.4939

Frequency of allele C is q = 0.666

The population is not in Hardy-Weinberg equilibrium

Explanation:

Given -

Number of individuals with straight hair = 244

Number of individuals with curly hair = 444

Number of individuals with Wavy hair = 312

Let "p" represents the frequency for allele for straight hair and "q" represents the frequency for allele for curly hair

p^2 represents the frequency of genotype "SS"

p^{2} = \frac{244}{1000} \\= 0.244

q^2 represents the frequency of genotype "CC"

p^{2} = \frac{444}{1000} \\= 0.444

2pq represents the frequency of genotype "SC"

2pq = \frac{312}{1000} \\= 0.312

Frequency of allele S is p

= \sqrt{0.244} \\= 0.4939

Frequency of allele C is q

tex]= \sqrt{0.444} \\= 0.666[/tex]

For being in Hardy Weinberg's equation-

p+q=1\\

Substituting the values in above equation, we get -

0.4939+0.666\neq 1

hence, the population is not in Hardy-Weinberg equilibrium

4 0
4 years ago
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