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KonstantinChe [14]
3 years ago
8

What is the significance of crossing-over during meiosis?

Biology
2 answers:
aksik [14]3 years ago
5 0
We just finished this unit, and The answer is A.
denis-greek [22]3 years ago
5 0
The answer is A I belive I hope dis helped
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Write 8 examples on possible hazard in raising four-legged animals and fish​
dedylja [7]

Answer: The below are following hazards of four-legged animals and fish.

Explanation:

The four legged animals like cats, dogs, horse, and others need proper shelter, food, and care to survive.

They need to be taken outdoors for excretion, and walk.

The mating period is not fix and not easily done.

The four like fishes like turtle and squid are difficult to be handled in aquarium.

The four legged fishes do not come in fishing net during aquarium cleaning.

There are chances of being biten by four legged animals and their associated diseases like rabies.

These animals can lick the food we eat and contaminate the food.

The animal feces may produce air pollution.

The animal noise like dog bark can cause noise pollution.  Thus can lead to problem of hypertension.

3 0
3 years ago
In what way can open-mindedness interfere with scientific progress
umka2103 [35]
<span>Open-mindedness does interfere with scientific progress as it can lead to acceptance of untested ideas. Open-mindedness can lead to actually accepting results that are not true. This is not a great angle for people involved with scientific experiments. Open-mindedness should be limited to the fact that the results can lead to negative answers. People that can accept this theory will ultimately succeed in their strive for creating something new. There is nothing wrong in discarding the results that does not seem to fit the bill.
Hope I helped!:)</span>
8 0
3 years ago
List three reasons why phytoplankton cannot survive at a hydrothermal vent
Doss [256]

Answer:

1. phytoplankton and other organisms harness sunlight , to create photosynthesis , near hydrothermal vent there is no sunlight

2. Phytoplankton need nutrients to grow, so when there's none at the surface they can't thrive, and there's no surface in hydrothermal vent

3.  The ocean's increasing acidity will most likely kill them.

Hope that helps

Explanation:

4 0
3 years ago
The _____________ cells in the _________________ of a nephron can cause and increase or decrease in body pH. A. intercalated; co
gayaneshka [121]

Answer:

The intercalated cells in the distal convoluted tubule of a nephron can cause and increase or decrease in body pH.

Explanation:

The renal collecting duct is the nephron segment where the final urine content of acid equivalents and inorganic ions are determined.

Two types of cells regulate the acid-base and volume homeostasis.

Intercalated cells, which express acid-base transporters and vacuolar H+-ATPase, maintain an apropriate acid-base balance and principal cells that express the epithelial sodium channel ENaC and aquaporin 2, regulate electrolyte reabsorption.

Filtered bicarbonate is predominantly reabsorbed from the proximal convoluted tubule about 80% and the remaining bicarbonate is reabsorbed from the thick ascending limb of the loop of Henle, the distal nephron, specifically the distal convoluted tubule & the connecting tubule, and finally the cortical and both the outer and inner medullary collecting duct.

Intercalated cells are enriched in mitochondria, and express proteins involved in transport of proton equivalents such as vacuolar H+-ATPase, carbonic anhydrase II and bicarbonate transporters. There are two types of intercalated cells Type-A and Type-B.

7 0
3 years ago
Read 2 more answers
Which of the following statements about 2,3-bisphosphoglycerate (BPG) binding is FALSE?
Kitty [74]

Answer:

The answer is C. BPG aids oxygen delivery to tissues by increasing the affinity of myoglobin for oxygen

Explanation:

The 2,3-bisphosphoglycerate (BPG) which can also be referred to as the 2,3 - di phosphoglycerate , is being produced by the red cells and has the ability to deoxygenate hemoglobin. This is because , his accumulation results to a decrease in the affinity for oxygen, this means that , it will convert hemoglobin to a low oxygen affinity state.

In this case, comparing the options given, it will be concluded that, 2,3  -biphosphoglycerate {BPG} does not aids the delivery of oxygen to tissues, but  decreases the affinity of oxygen, which deoxygenate hemoglobin, and causes the concentration of the carbon dioxide to increase.

8 0
3 years ago
Read 2 more answers
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