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vovikov84 [41]
3 years ago
10

When two separate species have body structures such as specific bones that are the same but the two species are very different t

hese structures are known as
Analogous structures
Homologous structures
Vestigial structures
Embryological structures
Biology
2 answers:
LenKa [72]3 years ago
4 0
<span>Homologous structures</span>
miss Akunina [59]3 years ago
3 0

Answer:

The correct answer is option A, Analogous structures

Explanation:

Analogous structure develop in species that live in similar kind of environment even though the two species are extremely different from each other .Being developed under similar conditions,  the function and look of the analogous structures are more or less same. For example the wings in flying animals such as bats, birds, insects, and even fish are similar to each other not only in function but also in structure (wings of all these species is primarily composed of feathers, scales, hair)

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mrs_skeptik [129]

Answer:

1842 by the man named Michael Faraday

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2 years ago
Rabbit fur color is controlled by a single gene with two alleles displaying complete dominance. A wild rabbit population inhabit
sukhopar [10]

Answer:

One factor would be adaptation to the environment. The brown rabbit blends in and doesn't stand out to predators

The second factor because the white rabbits do stand out to predators they are then killed and can not reproduce.

Explanation:

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3 years ago
Can you please answer this?
erma4kov [3.2K]
That would be A- Osmosis.

I hope this helps! (:

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Read 2 more answers
One of your lab partners has followed the recommended procedure of running Gram-positive and Gram-negative control organisms on
andreyandreev [35.5K]

Answer:

Reduced in holding time of decolrization step and also used less Alcohol because decolrization step is important in Gram's staining.The decolorization step must be performed carefully. Otherwise over-decolorization may occur. This step is critical and must be timed correctly otherwise the CV stain will be removed from the Gram-positive cells. If the decolorizing agent is applied on the cell for too long time, the Gram-positive organisms to appear Gram-negative..

Explanation:

Gram' staining is a technique used in microbiology labs to differentiate between Gram's positive and negative

<u>Gram-positive bacteria :</u>Stain dark purple due to retaining the primary dye called CV in the cell wall.

<u>:Gram-negative bacteria </u>Stain red or pink due to retaining the counter staining dye called Safranin or neutral red.

There are four basic step in Gram" staining

1) Application of the Primary Stain to a Heat-Fixed Smear of Bacterial Culture

2)Addition of Gram's Iodine

3)<u>Decolorization with 95% Ethyl Alcohol:</u>Alcohol or acetone dissolves the lipid outer membrane of Gram-negative bacteria, thus leaving the peptidoglycan layer exposed and increases the porosity of the cell wall. The CV-I complex is then washed away from the thin peptidoglycan layer, leaving Gram-negative bacteria colorless.

On the other hand, alcohol has a dehydrating effect on the cell walls of Gram-positive bacteria that causes the pores of the cell wall to shrink. The CV-I complex gets tightly bound into the multi-layered, highly cross-linked Gram-positive cell wall thus staining the cells purple.

The decolorization step must be performed carefully. Otherwise over-decolorization may occur. This step is critical and must be timed correctly otherwise the CV stain will be removed from the Gram-positive cells. If the decolorizing agent is applied on the cell for too long time, the Gram-positive organisms to appear Gram-negative. Under-decolorization occurs when the alcohol is not left on long enough to wash out the CV-I complex from the Gram-negative cells, resulting in Gram-negative bacteria to appear Gram-positive.

7 0
3 years ago
Biologists have separated monera into two kingdoms according to the differences between the two groups. in which classification
ASHA 777 [7]
Because scientist found another criteria for classifying organisms such as their DNA composition

Evidences that Taxonomy uses to group or categorizes species range from <span><span>
1.       </span>"Fossil Records</span> <span><span>
2.       </span>Comparative anatomy</span> <span><span>
3.       </span>Comparative embryology</span> 
4.       Biochemical information <span><span>
5.       </span>Cellular structure</span> <span><span>
6.       </span>Behavior</span>" 
<span>We also suggest that taxonomy has played various roles mainly in many aspects in Zoology, Botany, Anatomy and Physiology –aspects that include animal and human structures and functions. As the biotic community is so diverse it is classified to Biodiversity and the existence of properly assorting by set standard. </span>
7 0
3 years ago
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