0
I know that a child can only become colorblind when both parents are colorblind.
===============================================
There are number of types of color deficiencies (the correct name). These people are not really color 'blind'. I'll describe the common one. The most common type is the x-linked recessive congenital red/green deficiency. That means the defective gene is on the x-chromosome. So, a mom can be a carrier and still with normal vision since she has two x chromosomes. Since the father has only one x chromosome, he would be color deficient if he has the defective gene.
What the above also means is that the affected father cannot give this to his sons, but all his daughters would be carriers. A carrier mom with a normal father would have 50:50 of the sons with the defective gene and 50:50 of daughters would be carriers.
When a carrier woman and the affected man have kids, 50% of girl will be carrier and 50% of girl will be color deficient. Half the boys will be normal and half would have the condition. Notice that this is the reason you don't see many woman with this condition.
What else can I help you with?
How does blindness affect people?
how does blindness affect our society
How is river blindness transmitted to people?
River blindness is transmitted to people when a black fly bites
How can people recover from blindness?
yes some types of blindness can be recovered. it depends on what type of blindness it is.
How do people contract the disease color blindness?
Color blindness is hereditary and non-communicable.
Do any famous people have color blindness?
howie mandle has color blindness and so does oprah
How many people die from Blindness ?
No one "dies" from blindness, that is unless no one stops them from walking into traffic.
How many people have Blindness ?
over half the world
Write an critical appearance on his blindness?
the poem on his blindness ,the poet describe that when man was not blind then he had no feelings. he was not aware of other,s people feelings. he think only for himself not for other people. but when he was being blindness then he feels of every thing of world.he feels the feelings of others people. zia khan
Was john Dalton's blindness a problem?
to some people yes to some people no
Can color blindness affect people with autism?
No, of course colour blindness is not a form of autism. Autism is a neurological difference that results in social and communication problems, along with other issues like sensory problems and executive functioning problems. Autism isn't even comparable to colour blindness.
What does Night Blindness do to people?
Causes their vision at night to lessen.
Why are people born with color blindness?
Its cause of a genetic reason.
