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2 years ago

Briefly explain why it is necessary to critique a scientific argument before it is accepted.

2 answers:

4 0

It is necessary to critique a scientific argument before it is accepted in order to address and refine the problems of a specific argument. To critique an argument also eliminates biases in order to make the argument valid. It should also pass a certain standard to make it qualified for acceptance.

Alenkasestr [34]2 years ago

3 0

To be accepted, a scientific argument must first proved it's solidity and validity and critiques from other expert is usually the best way to explain both the solidity and the validity of a scientific argument

hope this helps

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For Heliodorus, having four arm-like extensions is dominant over having two. In a family of Heliodorus, Hayden has four arm-like

IRISSAK [1]

Answer:

Hayden- heterozygous dominant

Mother (Helen)- heterozygous dominant

Father (Harry)- homozygous recessive

Sister (Holly)- homozygous recessive

Explanation:

This is a genetic scenario involving a single gene coding for number of arm-like extensions in Heliodors family. According to the question, the allele for four arm extensions (A) is dominant over thr allele for two arm extensions (a). The question also states that Hayden and his mother have four arm extensions while his sister (Helen) and Father (Harry) have two arm extensions.

Firstly, it is worth it to note that Harry and Holly will be genotypically homozygous recessive (aa) because a recessive trait will only be expressed in a homozygous state, since two arm extensions is the recessive trait.

Now, since father is homozygous recessive, he will produce gametes that contains only "a" allele. If the mother were homozygous dominant (AA), no recessive offspring should be produced because all the offsprings wil phenotypically have four arm extensions. But one has two (recessive) which is the sister (Holly). This is because, although, the mother phenotypically has four, but is genotypically heterozygous dominant (Aa). Hence, it can produce A and a allele in gamete formation. Therefore, Helen has heterozygous dominant (Aa).

Lastly, Hayden also has four arm extensions, hence dominant. But since Aa genotype and aa genotype from Helen and Harry respectively, came together, no homozygous dominant offspring can be produced. This tells us that Hayden must be a heterozygous dominant.

4 0

1 year ago

Some members of david's family have an autosomal recessive disease. david does not have the disease; neither do his parents, nor

Sauron [17]

A pedigree shows the genotypes of the family members
in autosomal recessive disorders, the diseased genes are inherited from the parents. For the person to get the disease both diseased genes should be there in the genotype as its a recessive disorder.
the dominant gene - H
recessive gene - h
for a person to get a disease, genotype should be hh, as its autosomal recessive. If the person is normal he/ she could have the genotype HH or could be Hh and thats called a carrier.
the offspring will receive one gene from the mother and one from the father

8 0

2 years ago

Mafic lava tends to have low silica content. Based on this, which of the following statements about mafic lava is most likely tr

sashaice [31]

Answer:

A. It contains fewer volatile gases.

Explanation:

Mafic lava have a composition of about 45-55% silica with high amount of Fe, Mg, Ca.

The silica content is quite low compared to those of granitic magma whose silica content can reach up to about 60%.

What determines the viscosity of magma is basically the silica content of the magma and the temperature of the magma. Viscosity is the resistance to flow.

The higher the silica content, the lower the viscosity and the higher the amount of volatile gases. Such type of magma is the granitic magma. Granitic magma due to their viscosity flows slowly.

The lower the silica content, the higher the viscosity and the lesser the presence of volatile gases in them. Such an example is Mafic magma. Mafic magma flows very slowly with low amount of dissolved gases.

8 0

2 years ago

Read 2 more answers

2. Which of the following can survive either with oxygen or without it?

Gnesinka [82]

2. Which of the following can survive either with oxygen or without it?
facultative anaerobes

3. Where are you likely to find a photoautotroph?

near the surfaces of lakes and streams

4. During what process do prokaryotes exchange genetic information?

conjugation

5. What would be a direct consequence of the disappearance of nitrogen-fixing prokaryotes?

<span>Organisms would not be able to get nutrients they need to make proteins</span>

4 0

2 years ago

Read 2 more answers

Indicate whether each statement is true or false. 1. Rod cells are depolarized in the dark. (Click to select) 2. Glutamate binds

faltersainse [42]

Answer:

The correct answer is - 1. true, 2. true, 3. false, and 4. true.

Explanation:

1. Rod cells are the photoreceptors present in the retina that are hyperpolarized not depolarized in dark due to sodium ions efflux.

2. Depolarisation of the bipolar cell of the retina by glutamate release by rods and cones.

3. The adaption according to the light is known as a light adaptation which takes place due to a large part of photochemical in both rods and cones which is reduced to retinal and opsins.

4. when the light reaction takes place retinal converted to opsin

7 0

1 year ago