Most behavioral traits are affected by many different genetic influences as well as environment. The best descriptor for such traits is:

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#Question id: 19476

#SCPH28 | Zoology

The cry genes (or Cry proteins) have so far been grouped into 18 distinct groups, which either code for a 

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#Question id: 10941

#I Life Science/ Life Sciences Group – I-V

In a normal healthy person, which of the following blood components has the shortest life span?

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#Question id: 1389

#I Life Science/ Life Sciences Group – I-V

 Why has C. elegans proven to be a useful model for understanding apoptosis?

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#Question id: 7763

#I Life Science/ Life Sciences Group – I-V

Two major sources of mutation are radiation and reactive oxygen species (ROS).The reactive oxygen species hypothesis for aging postulates that 

1) Senescence results from the accumulation of DNA, lipid, and protein damage inflicted by ROS of mitochondrial origin; and

2) Mitochondria of long-lived species should produce high ROS than do mitochondria of short-lived species.

3) the capacity of mitochondria to consume ROS might distinguish long-lived species from short-lived species, rather than differences in ROS generation. 

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#Question id: 4765

#SCPH01 Biochemistry

The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?