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Vinvika [58]
3 years ago
11

A(n) ____________ is a family-tree like representation of how organisms are related based on ____________ .

Biology
1 answer:
yan [13]3 years ago
4 0

Answer: A PEDIGREE is a family-tree like representation of how organisms are related based on ANCESTRY. It shows genetic relatedness or blood relationship between individuals or organisms.

Explanation: Pedigree can be used to determine

1. Family history or genealogy.

2. Genetic or blood relationship.

3. Coefficient of relationship.

4. Degree of relationship.

5. Proportions of shared genes.

6. Mode of transmission of diseases.

7. Risk evaluation or determination.

Genetic counseling.

8. Linkage analysis.

Pedigree symbols are used in constructing pedigree.

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The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when ________.
Leokris [45]

Answer :There was enough oxygen in the atmosphere to support a major burst of life on Earth

Explanation:

The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when there was enough oxygen in the atmosphere to support a major burst of life on Earth

For the first half of the Earht's history, there was no oxygen in the atmosphere. It was inhabited only by single-celled organisms.Of  those simple life forms, the cyanobacteria may have. evolved a way to take energy from sunlight, and used it to make sugars out of water and carbon dioxide. They used the same chemical process we know as photosynthesis. This released vast quantities of oxygen into the atmosphere and  triggered the evolution of complex life.

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The study of psychoneuroimmunology suggests that when a stressful situation is encountered, several biological reactions occur,
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Answer: d) lightheadedness or unconscious episodes.

Explanation:

There are several ways the body responds to stress but one method used by psychologists to measure this response is Hans Selye's general adaptation syndrome. This occurs in 3 stages:

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2. The stage of resistance- this occurs till the stress is removed.

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The Genotype of the father is gg; The possible genotypes of offspring will be 
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When conducting a biology investigation, why is it important to know the safety rules and symbols?
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Because if you don’t you may die or get seriously hurt. Or just the investigation will go wrong and get unclear or wrong answers
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Idk sorry sosysevrgryehe Enid did
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