Stabilizing Selection
Updated: 1/30/2021
Stabilizing Selection

Storyboard Text

  • Stabilizing Selection: A Tip on How to Nourish Your Baby Safely and Properly During Pregnancy
  • Feed me—but not too much or too little!
  • I'm afraid to say that the little one is not going to make it. We must combat this increased infant mortality rate immediately or else, the population and community will tremendously suffer more.
  • by Zoe Bates
  • We will have to administer insulin to this little guy if we want to promise him a decent life expectancy, despite all the problems he will endure throughout his life.
  • I should have done something better during the pregnancy...
  • It is important for pregnant women that they must obtain enough nutrients for fetal growth and development. If mothers are either malnourished or overnourished, then the infant's health and weight can be severely impacted at birth.
  • It's a girl! She's a healthy one, too!
  • If a fetus is malnourished during pregnancy, they develop a phenotype for low birth weight and are born significantly underweight, which is potentially life-threatening and fatal for many.
  • If a fetus is overnourished during pregnancy, they develop a phenotype for high birth weight and are born significantly overweight, which places them at risk for several health complications, such as type 2 diabetes and lifelong obesity.
  • When a fetus is nourished healthily, they will be born with a normal birth weight and will not die in infancy, nor will they experience health problems and risks. The infant mortality rate will decrease, giving babies a much higher chance of survival.
  • Stabilizing selection will favor babies with normal birth weights for survival, which is an intermediate phenotype. Though babies' birth weight will no longer be genetically diverse, the alleles for low and high birth weights will be eliminated, promising the babies' healthiest and longest lives.