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Ainat [17]
2 years ago
9

A scientist tries to mate the two similar-looking fruit flies Drosophila melanogaster and Drosophila simulans. But he finds that

they are unable to produce viable offspring.What kind of evolutionary barrier could this be?
A) Chromosomal
B) Postzygotic
C) Physical
ANSWER QUESTION SAP
Biology
2 answers:
insens350 [35]2 years ago
6 0
The answer is B, Post zygotic

Paul [167]2 years ago
5 0

Answer:

B) Postzygotic

Explanation:

If the offspring resulting from the crossing of the two fly species is not viable, it means that although the hybrids were produced, they do not have the biological characteristics to survive and therefore, that there is a postzygotic barrier (it occurs after the zygote has formed).

A postzygotic barrier is  condition that prevents hybrids from surviving (dying) or reproducing (infertility).

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The monomer for carbohydrates:<br> Atriglyceride<br> Bmonosaccharide<br> Cenzyme<br> D.amino acid
mrs_skeptik [129]

Answer: Your answer would be B monosaccharides.

Explanation: the monomer for lipids is triglycerides so it cant be A. The monomer for proteins is amino acids so D is out. Enzymes are not monomers they are proteins which are made up of the monomer amino acids.

Hope this helps you :))

4 0
3 years ago
4. We use the electromagnetic spectrum to study space by viewing planetary
SOVA2 [1]

Answer:

To me we wouldn't know as much as we do. There is so much they don't want us to know about space. Just watch the moon at night and you can get a better answer.

7 0
2 years ago
How do the products and reactants of a chemical change compare?
steposvetlana [31]
The correct answer for this question is "<span>The mass of the products equals the mass of the reactants because the same matter is present."

All chemical reactions follow the Law of Conservation of Mass which states that mass cannot be created nor destroyed. This means that mass is constant before and after a process. If ever it seems like the mass is not the same, it is possible that the missing mass was converted to something else.</span>
7 0
2 years ago
A section through the renal cortex can be identified quickly by the presence of
Kazeer [188]

Answer:

Renal capsule.

Explanation:

The renal capsule is known as a fibrous layer. That fibrous layer helps to cover the kidney in a layer of perirenal fat (known as the adipose capsule). The renal cortex is known as the outer part of the kidney where ultrafiltration occurs. It is present between the renal medulla and the renal capsule.

The renal capsule is important for the physiological function of the kidney in the human body. It helps to influence interstitial pressure and consistently tubular reabsorption of water and sodium.

7 0
2 years ago
Select the reasons why viruses, prions, and viroids are not classified as living organisms. they are not able to reproduce indep
MatroZZZ [7]
They are not able to reproduce independently
They do not use energy for metabolism of any kind
<span>Their virulence is maintained by non-living cultures

Hope this helps. ^.^</span>
5 0
3 years ago
Read 2 more answers
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