BIOLOGY HIGH SCHOOL

In both American cotton (Gossypium hirsutum) and Egyptian cotton (G. barbadense) petal spot is a dominant character over no petal spot. When the cross is made within the species, the F2 progeny segregates in a 3:1 ratio with petal spot character in 75% of the population. However, no clear cut ratio is obtained in respect of the same flower character, when the cross is made reciprocally between the above two species. What is the explanation of this fact?

Answers

Answer 1
Answer:

 

I would say 4 because genetic drift could cause this if the population is small

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Rick’s class plans to study the effect of eating different breakfast foods on grades in morning classes. Students in the class will be the test subjects for the investigation. Which of the following would most likely make the results of the experiment invalid?

Answers

Some of the things that would make the experiment invalid would be, if there was a variation in the behavior of the class with respect to food - for example, if some people ate their breakfast earlier than the others. This then would mean that some students would have already digested their breakfast during the morning classes and the others would still be digesting.

Some students eat breakfast two hours before other students do.

Females are represented by _________, and males by ______?

Answers

Answer:

I think you're referring to pedigree symbols.

In pedigrees, males are represented by a square and females by a circle.

Explanation:

* Refer to the attached image.
Females are represented by eggs and male are represented by sperm

There is more kinetic energy in a molecule of water that is in liquid state than there isin a water molecule that is in a solid state.
O True
O False

Answers

False is the answer

The diagram shows the secretions of the pancreas in response to three different substances in chyme. Each pair of bars represents the response of the pancreas to a different variable. Pancreatic juice is composed of _______ bicarbonate in the presence of hydrochloric acid.

Answers

The answer is sodium bicarbonate.

Pancreatic Juice is composed of sodium bicarbonate in the presence of hydrochloric acid. Sodium bicarbonate (NaHCO2) is composed of sodium ions and bicarbonate ions. It acts to neutralize the acid or chyme entering the duodenum.

Which process breaks down sugars to make atp when oxygen is present

Answers

I'd check this answer but it's between Cellular Respiration and Aerobic Respiration.

Final answer:

Aerobic respiration is the process that breaks down sugars to make ATP when oxygen is present. It occurs in the mitochondria and provides most of the ATP needed for resting or moderately active muscles.

Explanation:

Aerobic respiration is the process that breaks down sugars to make ATP when oxygen is present. This process occurs in the mitochondria and is responsible for approximately 95% of the ATP required for resting or moderately active muscles. Glycolysis is another process that can generate ATP, but it is an anaerobic process that does not require oxygen.

Learn more about Aerobic respiration here:

brainly.com/question/13617008

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Explain how parasitism differs from commensalism.

Answers

Commensalism is an interaction in which one of those species would benefit, and the other one would not be affected. Parasitism is an interaction in which one of those species would benefit at the expense of the host organism. Thus, in commensalism we have one positive and one neutral result while in parasitism we have one positive and one negative result.
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