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adell [148]
2 years ago
8

Change is driven by competition and sexual selection

Biology
1 answer:
fenix001 [56]2 years ago
5 0

Answer:

true for most

Explanation:

this is not always true change can come from simple matters like is someone doesnt like the way there's trash everywhere and they decide to do something about it.

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To map genes of a bacterial strain, conjugation must be interrupted at given times. Suppose you have Hfr cells of genotype a+b+c
OLEGan [10]

Answer:

The answer is not in any of the options and is the following:

to eliminate any remaining Hfr cells.

Explanation:

In a medium that has a streptomycin antibiotic it is used to kill Hfr donor cells after the conjugation is interrupted. This is entirely due to the streptomycin sensitivity allele (str-s) which are found in Hfr strains. The presence of the streptomycin resistance allele, located in the receptor, is used for the specific destruction of Hfr donor cells after conjugation occurs.

6 0
3 years ago
What is the purpose of using genetic engineering to create edible vaccines
viva [34]
Many people hate shots and don't receive the vaccination, causing many illnesses spread around.<span />
8 0
3 years ago
Read 2 more answers
True or False? Please mark "True" if the entire statement is true or mark "False" if any part of the statement is false. You can
dalvyx [7]

Answer:

True. You can get vitamin A as "preformed vitamin A" which is already active and/or you can get vitamin A as carotenoids which the body can turn into active vitamin A.

Explanation:

There are two different types of vitamin A that can be obtained from food:

1.  Preformed vitamin A, which is already active, is found in animal products such as beef, fish, poultry and dairy products.

2. Provitamin A, which is the inactive form, is found in plant-based foods, such as fruits and vegetables. The most common type of provitamin A is β-carotene, which is a carotenoid that the body can turn into active vitamin A via an enzyme named β-carotene 15,15'-monooxygenase.

6 0
3 years ago
Select the correct answer from each drop-down menu.
chubhunter [2.5K]

Answer:

It contains Uracil (U) instead of Thymine (T).

Reason for primer removal:

This is because of their uracil nucleotide which is absent in DNA. Instead of Uracil DNA contains Thymine nucleotide.

Explanation:

Primers:

Primers are a short sequence of RNA. These sequences attached to the 5' end are the requirement of DNA polymerase to start the process of replication.

Primer removal:

After replication, these short fragments of RNA are removed to replaced with DNA from the newly synthesized DNA strand.

Reason for primer removal:

This is because of their uracil nucleotide which is absent in DNA. Instead of Uracil DNA contains Thymine nucleotide.

Best Answer:

Because It contains Uracil (U) instead of Thymine (T).

4 0
3 years ago
Which process is the first step of making a protein from DNA instructions?
-BARSIC- [3]

The first step of protein synthesis is called transcription. The DNA transcription to mRNA is actually the first step of the protein synthesis. During the transcription step the instructions encoded in the DNA of the genes are transcribed into the nucleotide sequence code of a ribonucleic acid (RNA)....

so your answer is Option (A)


4 0
3 years ago
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