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Author Question: When an oncologist is discussing the degree to which an organism's development is contingent on its ... (Read 72 times)

Davideckstein7

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on: Jun 25, 2018
When an oncologist is discussing the degree to which an organism's development is contingent on its environment, which of the following is the oncologist explaining?
 
  a. Transgenerational inheritance
  b. Epigenetics
  c. Histone modification
  d. Developmental plasticity

Question 2

Chromosome aberrations and mutations in cells that were not directly irradiated are referred to as:
 
  a. bystander effects.
  b. lethal mutation.
  c. delayed reproductive death.
  d. genetic instability.


chem1s3

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: D
Developmental plasticity is the degree to which an organism's development is contingent on its environment. Transgenerational inheritance is the heritable transmission to future generations of environmentally caused phenotypes. Epigenetics is the role of genes in development and disease. Histone modifications are changes in genetic acetylation.

Answer to Question 2

ANS: A
The directly irradiated cells can lead to genetic effects in the so-called bystander cells or innocent cells. This is termed bystander effects. Lethal mutation and delayed reproductive death are simi-lar phenomenons and are not related to bystander effects. Genetic instability is related to chro-mosomal instability.


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