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Mamont248 [21]
3 years ago
11

Commercial chicken breeders will cross two different breeds of chickens (e.g., White Rocks and White Cornish) to create a fast g

rowing chicken that is larger than either of the parental breeds. This result is best explained by the phenomenon of____________.
a. hybrid vigor.
b. incomplete dominance.
c. epistasis.
d. Both a and b
e. Both a and c
Biology
1 answer:
Stella [2.4K]3 years ago
3 0

Answer:

A: hybrid vigor

Explanation:

<em>Hybrid vigor is the improved morphological and physiological functions that are usually observed in resulting offspring when  genetically dissimilar organisms of the same species are mated or crossed with each other. </em>

Hybrid vigor is otherwise referred to as heterosis or outbreeding enhancement, and it is in contrast to inbreeding depression - the reduction in fitness or functions witnessed when genetically related organisms are mated.

Hybrid organisms combine the desirable functions in the two parents, resulting in an improved features when compared to the parents.

The correct option is A.

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As food is moved through the digestive tract the pancreas and small intestine release digestive enzymes according to signals bas
Blizzard [7]

Answer:

As the food moves through the gastrointestinal tract, and when it reaches the duodenum via the stomach, the food or the paste, that is, chyme becomes acidic because of the presence of acid in the stomach. When this acidic chyme moves towards the first section of the duodenum, it results in the discharging of cholecystokinin and secretin from the duodenal mucosa, which further instigates the pancreas to discharge alkaline pancreatic juice that comprises pancreatic enzymes and bicarbonate ions.  

Now the bicarbonate ions will turn the chyme alkaline and is now known as chyle. It is made alkaline as the pancreatic enzyme needs alkaline pH to function on food. The intestinal juice is also secreted due to the discharging of similar hormones as mentioned above. However, the difference is that both the mechanical stimulus and nervous stimulus results in the discharging of intestinal juice, though it is not true for pancreatic juice.  

4 0
4 years ago
Explain why the daughter cells of meiosis are genetically different from each other but the daughter cells produced by mitosis a
Ganezh [65]

The daughter cells produced from Meiosis are genetically different from each other due to the process of Crossing Over in the stage of Prophase I.


In Mitosis, there is no Crossing Over involved, since it is intended to help the body in growth and repair, not in reproduction.


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5 0
3 years ago
What is the advantage to the sphinx moth Xanthopan morgani by having an 8-inch long tongue?
balandron [24]

Answer:

The correct answer would be : option E.

Explanation:

Sphinx moth Xanthopan morganai is montypic genus of sphinx moth which has only one species which gives it as a name of morgan's sphinx moth found in east Africa and Madagascar.

This species of moth have a 8 inch long tongue which is characteristic feature of the species. The 8 inch long tongue gives them advantage in reaching to the nectar where no other pollinator can reach to their.

Thus, The correct answer would be : option E.

7 0
3 years ago
Sort the properties to describe each of the three domains. Some of the properties may be used more than once.
sveticcg [70]

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Eukarya: Includes plants, animals and fungi, eukaryotic cells, includes autotrophs and hetrotrophs.

Explanation:

Bacteria are the unicellular prokaryotes with a distinct feature of cell wall made up of peptidoglycan.

Archaea: They are unicellular and lack a defined nuclei and lives in extreme climate.

Eukarya: multicellular, Eukaryotic, well-defined nucleus, membrane-bound organelle, no cell wall.

3 0
3 years ago
During aerobic cellular respiration, oxygen is important because it is the final ___?
andrezito [222]

Answer:

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Explanation:

3 0
3 years ago
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