Alberta Free Tutoring And Homework Help For Biology 20

  0

0 Tutors Online Right Now

Select all indirect effects might increasing UVR have on animals?

 
Question 3 options:

selection for efficient DNA repair processess

selection for lighter pigmentation

a decreased survival of aquatic animals where dissolved material acts as a shield

wearing protective clothes

wearing sunscreen

an increased survival of aquatic animals where dissolved material acts as a shield

changes in behaviour

selection for darker pigmentation

3 years ago

Answered By Emily D

UVR is short for Ultra-Violet Radiation. We're talking about indirect effects, so things that aren't directly caused by the UVR (NOT cancer, DNA mutations, sunburns).Some of the indirect effects are:

> selection for efficient DNA repair processes - UVR causes damage to DNA so organisms that are better at repairing damaged DNA are more likely to survive to reproductive age

> behavioural changes that allow the organism to avoid UVR

> an increased survival of aquatic animals where dissolved material acts as a shield - if the dissolved material in the water is shielding from UVR, 

> selection for darker pigmentation - darker pigment, like dissolved material, shields the organism's cells from UVR

Attached Graph: