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3 years ago

In an experiment what should be the relationship between the control group and experimental group?

Biology

1 answer:

Sophie [7]3 years ago

3 0

Answer:

Ideally, the experimental and control groups are identical. As much as possible, the two groups should overlap in every characteristic.

Explanation:

At the beginning of your study, you need your two groups to be as statistically similar as is humanly possible. That way, when you control for other variables, you can reasonably attribute any statistically significant differences at the end of the study to your intervention.

You might be interested in

Which of the following best describes the importance of similar amino acid sequencing of a protein in different organisms?

TEA [102]

Answer:

C.Fewer differences in the amino acid sequencing of a protein show a greater evolutionary relatedness.

Explanation:

Since there are less differences it indicates that they are more related.

8 0

3 years ago

Number the steps of completing Gel Electrophoresis in order

madreJ [45]

Gel electrophoresis is a method used for the separation of DNA fragments based on their sizes. We have labelled the steps and you can know the sequence of the steps by going through attached image.

The technique is very important for the molecular analysis and identification of new genes. It is also useful in identification of genetic sequence of a particular gene.

Hope it helps!

5 0

3 years ago

Kaylis [27]

Answer:

H>D>G>J>A>E>I>B>F>C

H: DIAMOND

D: CORUNDUM

G: TOPAZ

J: QUARTZ

A: FELDSQUAR

E: APATITE

I: FLOURITE

B: CALCITE

F: GYPSUM

C: TALC

Explanation:

I found the full question on the test . Following is the complete answer

1. J>A>E and J>A>I

2. C is the softest. C is Talc

3. E>I ⇔ J>A>E>I

4. F>C

5. On the full question, B can scratch mineral F but it can be scratched by all the other minerals except C. B>F>C

6. H is the hardest. H is Diamond

7. D is Corundum

8. H>D>G>J

Combine all the information, we have the following:

H>D>G>J>A>E>I>B>F>C

4 0

3 years ago

The lactose repressor protein ________. a. is transcribed with the structural lac genes b. is activated by binding lactose c. is

cluponka [151]

Answer:

c. is inactivated by binding lactose

Explanation:

Lactose is a sugar mostly present in milk or dairy products. It is degraded in the body by an enzyme called LACTASE. Since lactase is an enzyme (protein), it must be encoded by a structural gene (Lac gene). However, the expression of this structural gene can be inhibited by the absence of lactose.

Ideally, when lactose is present, it binds to a DNA binding protein called Lac repressor protein (inhibitor) causing the inhibitor protein to lose its shape and fall off, allowing transcription of the lac gene to occur. In other words, the presence of lactose deactivates the inhibitory function of lactose repressor protein.

7 0

2 years ago

Mom and dad are both heterozygous for the harmful or deleterious recessive trait. what is the probability of their offspring hav

Ganezh [65]

25...50.

Let’s assign the dominant allele letter T and the recessive allele letter t. Next step we draw the punnet square below and determine the possible genotype of the offsprings with regards to this trait. It is therefore evident that the probability that the offspring will have the illness (genotype tt) is 25%

50% will be carriers (genotype Tt) like their parents

4 0

3 years ago