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Andreyy89
3 years ago
8

Helpppppp thank you any help will do

Biology
1 answer:
madam [21]3 years ago
3 0

Answer: B

Explanation:

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Which activity can occur without the use of energy?
Phoenix [80]
Sounds like a multiple choice question, may I have the options?
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3 years ago
How did the work of Mary Leakey contribute to our knowledge of early hominids and an understanding of human evolution?
Alecsey [184]

Answer:

M.Leakey was a paleoanthropologist of  no formal  university education and British origin. Her major discoveries  were;

1. the proconsul skull

2. Zinjanthropus skull at Olduvai Gorge In Tanzania

3, system of classification of discovered stones.

4.Laetoli footprints at Laetoli sites.

However, her most outstanding  discoveries were proconsul skull (  projecting  face with no browridges, and presence of ape-like teeth shapes) and the Laetoli prints. She believed the skull belonged to ancestral Homo habilis, which  could be traced to origin of mankind.

The discovery of Laetoli  prints showed evidences of bipedalism and the origin  of Australopithecus. These prints and  the  skeletons she unearthed  proved that the ancestral of human race actually walked upright, nearly four feet tall in height.Hence she concluded that these prints actually belong to  the Australopithecus. This  brought a paradigm shift in modern understanding of human evolution of prehistoric times and the origin of  mankind,

Her discoveries generally  throw light on the <u>evolution of mankind </u>and  new understanding of <u>genesis of human race</u>

Explanation:

6 0
3 years ago
What biological concept was mendel studying when he crossed pea plants many times over many generations?.
blagie [28]

Answer:

Inheritance Patterns

Explanation:

Mendel was studying how genes are past on to future generations and in what circumstances this can occur. He used pea plants as they multiply and grow quickly allowing him to observe many generations much faster than he would be able to observing humans or even other mammals. He also used pea plants because this way he could control reproduction of his pea plant population to adjust to specific questions he had in terms of his research.

7 0
2 years ago
What is the term used to describe a characteristic that helps an organism survive in its environment and reproduce?.
Readme [11.4K]

Answer:An adaptation is any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment.

Explanation: National Geographic Society

6 0
2 years ago
Early-onset Alzheimer’s disease affects people under the age of 65. Less than five percent of people who are diagnosed with Alzh
gtnhenbr [62]

Answer:

With respect to the cases of early-onset Alzheimer’s disease are inherited, a type known as familiar Alzheimer’s disease (FAD), the statement is best supported by this information is that FAD is the result of a genetic change in one or more chromosomes.

Explanation:

Options for this question:

  • <em>FAD is the result of a genetic change in one or more chromosomes.</em>
  • <em>Natural selection will continue to reduce the incidence of FAD.</em>
  • <em>FAD affects only the genes of middle-aged people.</em>
  • <em>Deletion of one amino acid causes FAD.</em>

Alzhaimer's disease is a type of dementia that is characterized by neuronal degeneration, causing disorientation, memory and manual skills loss , among others. The familiar variety (FAD) is hereditary and is associated as a cause of disease and early Alzhaimer, before 60-65 years.

So far, three types of mutated genes related to FAD have been established:

  • PSEN₁ or presenilin-1 gene , more frecuent.
  • APP or amyloid precursor protein gene.
  • PSEN₂ or gene for presenilin-2, very rare or uncommon.

In some cases, people affected by FAD have alteration in more than one gene at the same time.

For this reason, it can be stated that FAD is the result of a genetic change in one or more genes or chromosomes.

Learn more:

Alzhaimer's disease brainly.com/question/7999310

5 0
3 years ago
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