Red-green color blindness is much more common in males because Blank______.Multiple choice question.females have more cone cells than males dothe disease is triggered by testosteroneestrogen has a protective effect on visionthe abnormal gene is on the X chromosome
Question
Red-green color blindness is much more common in males because Blank______.Multiple choice question.females have more cone cells than males dothe disease is triggered by testosteroneestrogen has a protective effect on visionthe abnormal gene is on the X chromosome
Solution
The correct answer is "the abnormal gene is on the X chromosome".
Red-green color blindness is a sex-linked trait, which means the gene that causes it is located on the X chromosome. Males have one X and one Y chromosome (XY), while females have two X chromosomes (XX).
If a male inherits the X chromosome carrying the gene for color blindness, he will be color blind because he doesn't have a second X chromosome to compensate for the abnormal one.
On the other hand, a female would have to inherit two copies of the gene (one on each X chromosome) to be color blind. If she only inherits one, she will be a carrier but will not be color blind herself. This is why red-green color blindness is much more common in males.
Similar Questions
Red-green color blindness and hemophilia are examples of ______, which are controlled by alleles on the sex chromosomes.
Why is colorblindness more prevalent among males? Provide a thorough explanation. Use the terms allele and chromosome in your answer.
Color blindness is a sex-linked recessive trait. Which of the following statements must be true about color blindness?Group of answer choicesIf a mother is color-blind, then all her daughters will be color-blind.A color-blind boy’s father must also be color-blind.Females cannot be color-blind.A color-blind female must have a color-blind father.
Which of the following statements is not true?Men have one X chromosome and one Y chromosomeWomen have two X chromosomesBoth men and women carry two alleles for the colour blindness geneThe Y chromosome is smaller than the X chromosome2Colour blindness is controlled by a sex-linked gene with two alleles on the X chromosome: a dominant normal (N) allele and a recessive colour blind (n) allele. What is the genotype of a female carrier of colour blindness?XnYXNXnXNXNXnXn3What is the genotype of a male with colour blindness?YNXnYnXNYXNYXn4There are four different phenotypes of blood types in humans, which are determined by three different alleles: A, B and O. Which of the following are genotypes of a person with blood group O?IOIO onlyIAIB or IOIOIAIO or IOIOIBIO or IOIO5What is meant by the term ‘codominance’?One allele of a gene is dominant over the otherA gene is only found on the X chromosomeTwo different alleles of a gene are expressed equallyA gene has only one allele
A male who has normal vision marries a woman who is colorblind. What percentage of their male offspring will be colorblind?Group of answer choices
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