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3 years ago

How does DNA influence physical traits?

2 answers:

8 0

DNA is the genetic holder in our body ! for any message DNA has to convert in RNA and then protein resulting in all the traits we have !

so on transcription DNA information is converted to RNA and during translation into protein .... thus these protein helps in building our appearance , our Personalities every thing !

so we can say DNA influence physical trait !

sukhopar [10]3 years ago

7 0

Genes are sections of DNA that carry your information. This information is used to build and maintain cells that make up different biological traits. Such as eyes, hair color, freckles,and etc. In addition, the DNA splits in two, and forms two different DNA strands during cell replication. ( So the DNA molecule is being copied to produce two identical DNA molecules). However, sometimes this process is not perfect, and mistakes occur. These mistakes may change the way an organism is constructed or functions.

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Factors that are manipulated during an experiment procedure

Contact [7]

Science is an organized way of using evidence to learn about the natural world.

The goal of science is to investigate and understand the natural world, to explain events in thenatural world, and to use those explanations to make useful predictions.

The Scientific Method Itself:
I. Observations:

Whether they start with a problem or not, scientists make careful observations.

Observations are a way to collect data (recorded observations or information) about events or processes in a careful, orderly way, using the senses (sight, hearing, touch, taste and smell).

Two types of data include:

a) Quantitative data: Are observations which collect data that can be directly measured or counted.

b) Qualitative data: Are observations involve making careful descriptions or drawings and do not involve numbers.

Inference: A logical interpretation of an observation based on prior knowlege. An educated guess as to what is occurring.

II. Hypothesis:
A proposed scientific explanation for a set of observations. Scientists devise hypotheses based on logical inferences, prior knowledge and informed, creative imagination.

Hypotheses may be tested by controlled experiments, or by collecting additional data.

III. Controlled Experiment:
A way to test a hypothesis by testing a single variable by changing it while keeping all other variables the same.

Variable: Any factor during an experiment that could change and affect the results (Examples: Temperature, pressure, amount of light, color of light, human error, etc......)

Manipulated variable: The factor in an experiment that is deliberately changed to test the hypothesis.

Controlled variable: any factor during an experiment that a scientist purposely keeps the same.

During the experiment, a scientist divides the tests into 2 groups, the control setup and the experimental setup.

Experimental setup: The part of the experiment that contains the manipulated variable.

Control setup: The part of the experiment that does not contain the manipulated variable. It may be called the placebo.

3 0

4 years ago

What is any energy resource that can be used in place of fossil fuel’s called

Masja [62]

I think those are usually called "alternative fuels", or

"alternative energy sources". Those are things like

wind, solar, hydro, geothermal, tidal, nuclear etc.

I don't like that description at all. It makes it sound as if

there's something about them that's not quite right, and

that we don't really take them seriously.

The only thing that makes them "alternative" is that we're

just now discovering them, for the first time since we left

the caves.

Up until now, we've always been happy to burn the stuff

that's cheap and easy to get from a hole in the ground.

But we're just now starting to notice that it's poisoning

the air we breathe, and plus, so many people have been

using it for so long that now, it's becoming harder to get.

So we're starting to look around now and see what else

we can use to do the job.

8 0

3 years ago

Read 2 more answers

How dose the overfishing of bass impact co2 entering the lake from the atmosphere

sergeinik [125]

Answer:

Changing with the climate

Fish make calcium carbonate by combining calcium from seawater with carbonate ions generated from CO2 in their bodies. If the amount of atmospheric CO2 goes up as expected leading to a CO2 increase in the oceans the fish may produce more carbonate ions and thus more calcium carbonate.

Explanation:

6 0

3 years ago

If you have the gene for hemophilia, will you always have hemophilia?

Elena-2011 [213]

Answer:

most likely

Explanation:

5 0

3 years ago

Read 2 more answers

What condition might allow a contractile vacuole to pump more quickly or pump more slowly?

eimsori [14]

In a hypotonic solution

Explanation:

Contractile vacuoles are used mainly by protozoans like an amoeba in osmoregulation. When the organism environment becomes hypotonic to the cell's cytoplasm, the contractile vacuole pumps more rapidly. This is because, in the hypotonic environment, more water is getting into the cell by osmosis. To maintain the right osmotic pressure in the cell more water is needed to be pumped out – this is a function of the organelle.

6 0

3 years ago