Do you ever wonder what is your unborn child eye color will be? If your eyes are hazel and your partner’s is blue, what would be the chances of your child getting hazel or blue eyes? Most parents are thrilled to know what would be the result when two different traits and genes are combined.
There are also other couples who are both brown-eyed and end up having a blue-eyed baby. They may wonder how this is possible. Thus, it is important to know and understand how genetics works so people would have a clear understanding of the chances of getting a particular color of the eyes.
Determining the child’s eyes depends on three factors such as parent’s eyes, whether parents have heterozygous and homozygous traits, and if their genes are dominant or recessive. Generally, the inheritance of a particular trait is considered as polygenic. This means that a parent’s genes will usually but not always determine the possible color of the child’s eyes.
For example, both brown-eyed parents may have a blue-eyed baby. The polygenic nature of the eyes reveals that when determining the color of your baby’s eyes, sometimes it doesn’t completely follow the rules. Parents may carry the same gene or referred to as homozygous genes, or they may have one dominant gene and the other is less dominant which referred to as heterozygous.
Determining which trait is homozygous or heterozygous is impossible to find. However, geneticists consider green and brown as dominant colors. For example, parent A have brown eyes, while parent B has green eyes, the probability of having green or brown color is 50% if the parents have heterozygous genes. If parents have homozygous genes, the chances of getting brown eyes are 99%, but this is less likely to happen.
Another example is that, if parent A has green eyes while parent B has hazel, the chances of having hazel or green is 50%. If they are having heterozygous genes, most likely they will have 50% chance of having hazel or green color. Similarly, if they have homozygous genes, they also have 50% chance of getting either colors.
No wonder, parents gets too excited in thinking how will their baby’s eyes look like. Will it be like mom or like dad? Thus, some people are using an eye color calculator to determine the chances of having brown, green, blue and or hazel eye color.
http://pregnancyready.com/how-to-know-the-possible-eye-color-of-your-unborn-baby/
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