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Aloiza [94]
3 years ago
6

Regulation of expression of genes is important because: Group of answer choices A. some genes function in opposition to other ge

nes. B. it is energetically wasteful to produce all possible genes. C. multicellular bacteria need specialized cell types. A and B. All of the above
Biology
1 answer:
Crazy boy [7]3 years ago
7 0

Answer:

All of the above.

Explanation:

Regulation of the expression of genes refers to different processes tge cells use to increase or decrease the production of some gene content. It involve Turing gene on and off so as to ensure that appropriate genes are expressed at the right times. This allow organism to respond to changes in their environment.

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n rabbits, coat color is affected by a series of alleles with a hierarchy of dominance such that C >Cch>Ch>C. Each alle
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A gardener can increase the number of dahlia plants in an annual garden by either buying new bulbs each year or dividing the existing bulbs to create new plants . The table below shows the expected number of bulbs for each method

Part A
For each method,a function to model the expected number of plants for each year

Part B
Use the Functions to Find the expected number of plants in 10 years for each method.

Part C
How does the of plants in five years compare to the expected number of plants in 15 years !Explain how these patterns could affect the method the gardener decides to use.
6 0
3 years ago
You walk up to the crime scene. A dead body is lying on the bank of the river, just a few miles outside of the city. There is a
vlada-n [284]

Answer: 1.

As the first responder, you should:

Explanation:

Protect the crime scene.

This means that the first responder should protect the public and the crime scene and also control the changes made to the crime scene to the best of their ability.

Protection of the public means the evacuation of the public from the crime scene to a safer area.

The crime scene should be protected against evidence distortion.

The control of changes made to the crime scene maintains the original evidence present at the crime scene.

2.

Answer:

Fire arm safety measures shall be taken

The gun should not be transported by placing a pencil in the barrel or inside the trigger guard.

There shall be documentation of the location of the gun.

Photos of the location of the gun should be taken.

There after the gun shall be retrieved from the river safely.

Since the gun shall be wet at the time of collection, it shall be kept in a plastic bag.

The gun shall then be transported to the evidence receiving area.

The gun should not be held in the plastic bag for more than two hours since this could lead to the growth of microorganisms which can destroy evidence.

3

Answer:

Things to keep in mind

Fire arm safety mechanisms should be put in place.

Evidence packed in plastic material should not be held in the packing material for more than two hours.

Only large quantities of dry powder should be collected and stored in plastic bags.

Any items which may cross contaminate each other must be packaged separately to avoid evidence contamination

The containers should be closed and secured to avoid the mixture of evidence during the transportation process.

Each container should have:

The collecting person's initials

Date and time it was collected

Complete description of the evidence and where it was found

The investigating agency's name and their file number.

4

Answer

Bullets from near the body of the victim should:

Be packaged separately and placed in paper envelopes or small cardboard pillboxes.

Handled carefully to prevent alter of evidence such as fingerprints.

The bullets have to be submitted to the crime lab for identification of any evidence present on them that could help in investigation.

Be kept safe and separate from the gun.

The container should be labeled to warn that the contents are precautions should be taken to prevent anyone from being injured.

5

Answer:

The gun and bullet might help us out in finding out:

The fingerprints of the user: The gun can be checked to retrieve the fingerprints of its handler if any.

The bullet cartilages shall reveal the owner of the bullets, this shall lead to the identification of a suspect.

Blood, hair that might be found on the gun and bullets might help in DNA analysis. This shall in turn lead us to a suspect.

The guns registration number shall lead us to the owner of the gun used thereby the suspect in the crime.

6

Answer:

The officer who arrested Oscar Pistorius on the night Reeva Steenkamp was killed last year testified Friday that police at the crime scene mishandled evidence, including a ballistics expert who handled the murder weapon without gloves.

This in turn led to confusion in evidence of the case.

The police should have instead used gloves in handling the pistol at the crime scene.

This would have prevented the intoxication of evidence.

Explanation:

6 0
2 years ago
In Yellowstone National Park, there are dozens of spectacular thermal pools filled with very hot water that rises from deep unde
Archy [21]

Answer:

Directional Selection

Explanation:

The type of natural selection that favors one of the extreme phenotypes over the intermediate and another extreme phenotype is called directional selection. Here, the extreme phenotype exhibits better survival and reproductive fitness over the other phenotypic ranges.  

In the given example, the frequency of the heat-tolerant allele in microbes is shown to increase under the conditions of higher temperatures of the water of the springs in which they live.  

When the temperature of spring water is increased, the frequency of the heat-tolerant allele is reduced and is increased again upon an increase in water temperature.

Since the natural selection favors the extreme phenotype (microbes with heat tolerance) when the spring water exhibits higher temperatures, it is directional selection.  

7 0
3 years ago
How does population density differ from population size? a.Population size takes all organisms into account, while population de
hichkok12 [17]

Answer: B) Population size is the total number of organisms, while population density is the total number of organisms within a given area.

Population size refers to the total number of organisms present in a  population. On the other hand, population density reflects population size per unit area.

For example- In a population, if 200 individuals are living in 100 square meter of area.

Population size = 200

Population density = 200/ 100 = 2 individuals per square meter.

5 0
3 years ago
Read 2 more answers
Which of the following best describes the process of meiosis?
nekit [7.7K]
B.) Produces haploid gametes
8 0
3 years ago
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