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Y_Kistochka [10]
3 years ago
7

A lab technician provides you with a bacterial pellet labeled "G3". When you observe the pellet under UV light, there is little

to no fluorescence. Other than contamination, provide two scientific explanations for what might have happened to cause this outcome.
Biology
1 answer:
umka21 [38]3 years ago
4 0

Answer: The two possible explanation for the outcome are as follows:

Explanation:

1. The bacterial DNA in the pellet was not completely isolated properly, therefore, no fluorescence was observed in the pellet under the exposure of UV radiation.

2. After 3 hours of induction with the IPTG and labeling with the G3. The IPGT might not be able to bound to the bacterial DNA that could show response of fluorescence in the ultraviolet light.

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Which chemical equation is balanced to show that matter is conserved during the reaction? *
madam [21]

Answer: Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.

Explanation:

3 0
3 years ago
A batch of pea plants with purple flowers were grown by crossing plants that had purple flowers (PP) with plants that had white
lubasha [3.4K]

White flowers would be recessive and purple would be dominant

(ps capital letters show the dominant genes and lowercase are usually the recessive)

3 0
3 years ago
Which aspect of this source should make the reader question its credibility?
Dahasolnce [82]

Answer:

The correct option is A)  It is not written by an authority

Explanation:

In the English language, credibility can be described as the quality of an object to be reliable or trusted.

A piece of written work which does not mention the name of the writer may be considered to be not reliable and trustworthy. Hence, the correct option is A.

Other options, like option D, is not correct because a peer- reviewed journal carries authentic information as the work has been rechecked by different people who have expertise on the subject.

7 0
3 years ago
A certain eukaryotic organism has multiple, distinct genes with highly similar sequences that are expressed at different times i
vlabodo [156]

These genes could have arisen by gene duplication.

<h3>What is gene duplication?</h3>

Gene duplication is the process of copying a section of DNA that codes for a gene. A retro transposition event or a recombination mistake are both potential causes of gene duplication. As a result, the duplicate gene coding may experience a significant number of modifications throughout time. This might prevent the gene from functioning or, in other situations, give the creature a benefit.

Gene duplication is a phenomenon that can happen through a variety of ways:

  • Ectopic Recombination: Uneven crossing-over between misaligned homologous chromosomes during meiosis might result in duplications. A duplication at the exchange site and a reciprocal deletion are the results of this recombination.
  • Replication Slippage: Short genomic sequences can be duplicated as a result of the replication error known as replication slippage. DNA polymerase starts copying the DNA during replication, but eventually the polymerase separates from the DNA, causing replication to stall. The replicating strand is incorrectly aligned when the polymerase reattaches to the DNA strand, which accidentally results in several copies of the same portion.
  • Aneuploidy: When a single chromosome's nondisjunction causes an abnormally high number of chromosomes, this condition is known as aneuploidy. Aneuploidy is frequently damaging and frequently causes spontaneous miscarriages in mammals. Some aneuploid people can survive. For instance, human trisomy 21 causes Down syndrome but is not lethal.

Learn more about gene duplication here:

brainly.com/question/14014915

#SPJ4

3 0
2 years ago
While the introduction of the mutant synthetase gene restored some of the growth characteristics, this strain still does not gro
katen-ka-za [31]

Answer:

A and D

Explanation:

Transfer ribonucleic acid (tRNA) is a type of RNA that decodes mRNA (messenger RNA) into protein. This phenomenon is known as translation.

If the strain of mutant synthetase gene does not grow fast despite having growth characteristics, the following possibilities could happen:

  • Sometimes histidine tRNA sends asparagine instead of histidine to other proteins where histidine residue should have been present for growth.
  • The normal synthetase might be present but not in an adequate amount.
6 0
2 years ago
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