BIOLOGY COLLEGE

Mastering biology Multiple Choice Which is the most likely explanation for a particular human population with a higher incidence of polydactyly (extra fingers/toes) than the human population as a whole.

Answers

Answer 1
Answer:

Answer:

Founder effect

Explanation:

The complete question is as follows:

Which of the following is the most likely explanation for a particular human population with a higher incidence of polydactyly (extra fingers/toes) than the human population as a whole?

diversifying selection

founder effect

directional selection

bottleneck effect

  • When a small number of individuals move out of a larger population into a new area and colonise then the descendants arising from these smaller number of individuals have reduced genetic diversity and this is termed as founder effect.
  • The loss of genetic variation occurs because the smaller number of individuals will only have a limited number of alleles for a given gene and hence, the genetic diversity will be reduced.
  • In such cases where founder effects occurs, it is usually seen that there are higher incidences of having genetic defects amongst the individuals.
  • Thus, if a particular human population has higher incidence of polydactyly then this must be a cause of founder effect.

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COLLEGE

How might alterations in dna structure be harmful to an organism?

Answers

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If element X has 15 protons, how many electrons does it have?

Answers

If element X has 15 protons, it would also have 15 electrons.
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A client admitted to the hospital in preparation for a splenectomy to treat autoimmune hemolytic anemia asks the nurse about the benefits of splenectomy. Which statement best explains the expected effect of splenectomy?

Answers

Answer:

It will remove the major site of red blood cell (RBC) destruction.

Explanation:

For clients with autoimmune hemolytic anemia, if corticosteroids do not cause a lessening or recovery of the disease conditions, a splenectomy (i.e., getting rid of the spleen) may be executed since it takes away the main site of Red Blood Cells (RBC) destruction.

After splenectomy, the hemoglobin concentration almost always raises, reticulocytes reduces, bilirubin levels return to usual, and RBCs have a moderately normal life span.

Reference:

Hinkle, J.L., and Cheever, K.H. Brunner & Suddarth's Textbook of Medical-Surgical Nursing, 13thed., Philadelphia: Lippincott Williams & Wilkins, 2014, Chapter 33: Management of Patients With Nonmalignant Hematologic Disorders, p. 911.

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Activity that is equivalent to brisk walking in intensity is considered to be _______________ physical activity.

Answers

It is considered to be lifestyle physical activity. Lifestyle physical activity is a conduct that is extensively characterized as any real development created by the constriction of muscles that considerably expands vitality use. This kind of conduct can be gathered amid one's day by day routine by partaking in at least 30 minutes of self-chose physical exercises.
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Answers

Answer:

Gametes are what fuse together to make an organism. (Sperm cells)

Explanation:

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