Meiosis: How is color blindness inherited?

Investigate the principles of Mendelian inheritance and discover how color blindness is inherited by observing chromosomal rearrangement in an animation.

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  • Description
  • Features

This short, targeted simulation is adapted from the full-length “Mendelian Inheritance” simulation.

Did you know that more than 99% of your genes are identical to those found in any other human being on the planet? In this simulation, you will learn the principle of inheritance and how chromosomal rearrangement leads to color blindness being inherited. Why is color blindness more common in men than women?

Learn the principles of inheritance

Begin by reviewing some of the principles of inheritance. You will learn about how genes are passed on from your parents with cells called gametes. Discover the difference between phenotypes and genotypes. Then find out how a genotype can be represented using letters, and how to show if an allele is dominant or recessive. You are then ready for an animation about gametes and chromosomal rearrangement.

Experience inheritance at the cellular level

Dive deeper into the laws of inheritance as you watch how cells divide to become gametes inside the reproductive system. Watch the cells as the chromosomes duplicate. Then see how genes from the maternal and paternal chromosomes can be swapped in the process called crossing over. The cells will continue to divide until a gamete is formed. Consider how these processes relate to Mendel's laws of inheritance.

Discover how color blindness is passed on

By unraveling the laws of X-linked inheritance, discover why color blindness affects more men than women. Rewatch the animation showing how gametes form, but this time the genes for color blindness are highlighted. A summary chart shows the different possible combinations of chromosomes. Is color blindness a recessive or dominant trait?

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Investigate the principles of Mendelian inheritance and discover how color blindness is inherited by observing chromosomal rearrangement in an animation.

Techniques in lab
Learning objectives

At the end of this simulation, you will be able to...

  • Explain how traits are passed on from parents to their offspring and what causes variation between siblings
  • Describe Mendel’s Laws of Inheritance in color deficiency
  • Analyze dominant and recessive alleles, and how they play a part in an individual’s biological make-up
Simulation features

Length: 15
Accessibility mode: Available
Languages: English (United States)

NGSS

HS-LS3-2

IB

Biology 3.4 Inheritance

AP

Biology 5.1 Meiosis