Is light eye colour dominant or recessive trait?

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Discussion Overview

The discussion revolves around the genetic inheritance of light eye color, specifically whether it is a dominant or recessive trait. Participants explore the implications of parental eye color on the eye color of their children, considering both theoretical and practical aspects of genetics.

Discussion Character

  • Homework-related, Exploratory, Debate/contested

Main Points Raised

  • One participant suggests starting with the assumption that light eye color is recessive and considers the genetic configurations of parents and children.
  • Another participant expresses uncertainty about the implications of dominant traits and suggests that analyzing all possible combinations may be necessary.
  • A third participant agrees with the recessive assumption and outlines possible parental configurations that could lead to a child with light eyes.
  • A later reply emphasizes the importance of examining light-eyed parents to determine the eye color of their children, suggesting a more focused approach to the problem.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether light eye color is dominant or recessive, with multiple viewpoints and uncertainties expressed regarding the genetic implications.

Contextual Notes

Limitations include the lack of established definitions for dominant and recessive traits in this context, as well as unresolved reasoning about the implications of different genetic combinations.

navneet9431
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Homework Statement


A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?

Homework Equations


Not Any

The Attempt at a Solution


I tried to solve this question comparing two cases.
One,where light eye colour is considered to be dominant trait and is represented by 'L' and other where light eye colour is considered to be recessive trait and is represented by letter 'l' .
I really do not know how to move on to the next step?
Please provide a solution.
Note:I am a High School student and English is my second language.
I will be thankful for help!
 
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Idea about starting from l and or L combinations looks reasonably.

Assuming it is recessive - is there anything you can be sure about parents? What can you tell about their kids?

I afraid for dominant it is more convoluted and you will need to write out all possible combinations and see where it leads.
 
Assuming that it is recessive I can say that the genetic configuration of the child is ll .
Now,this configuration is possible if both the parents have "ll" or either of them have "Ll" and the other has "ll".
Am I correct with me reasoning?

I am really not sure about the Dominant case.
Please help!
 
Well, what you write is OK, but if you want to see if there is a correlation between eye colors you better start with light eyed parents and see what is eye color of their children.
 

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