A woman can have either:- i two normal X chromosomes, so that she will not be colour blind or be a carrier XX , ii or, one normal X and one colour blind carrying X chromosome, in which case she will be a carrier X X , or rarely iii she will inherit a colour blind X from her father and a colour blind X from her mother and be colour blind herself X X.
She will pass on colour blindness to all of her sons if this is the case. See the tables below to understand how people can become colour blind and how colour blindness is passed on to future generations.
You can see an example of a real family by clicking here. Mobile users: We are in the process of updating our website which will create temporary problems for mobile visitors. Please bear with us and in the meantime please access our site via the desktop version for a better experience. Possible Answers: a male somatic cell. Correct answer: a sperm. Explanation : Since the cell has a total of 23 chromosomes it must be a gamete.
Example Question 11 : Inheritance. Possible Answers: The Y chromosome. Correct answer: A non-sex chromosomes. Explanation : Autosomes are all the chromosomes that do not determine an individual's sex. Example Question 12 : Inheritance. Possible Answers: an autosome. Correct answer: a zygote. Explanation : The union of two gametes is called fertilization, which results in a zygote. Example Question 13 : Inheritance. Possible Answers:. Correct answer:. Explanation : A haploid cell has only one set of chromosomes as compared to the two sets normally found in diploid cells.
Example Question 14 : Inheritance. When two human haploid cells fuse together the resulting cell will have how many chromosomes? Explanation : Haploid cells have 23 chromosomes each 22 autosomes and 1 sex chromosome so when they fuse the resulting cell will have 46 chromosomes 44 autosomes and 2 sex chromosomes. Example Question 15 : Inheritance.
Explanation : A somatic cell is a diploid cell so it will have 22 pairs of autosomes and one pair of sex chromosomes for a total of 46 chromosomes. Copyright Notice. View AP Biology Tutors. Meghana Certified Tutor. Allyson Certified Tutor. Damian Certified Tutor. Report an issue with this question If you've found an issue with this question, please let us know.
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Find the Best Tutors Do not fill in this field. Your Full Name. Red-green color blindness means that a person cannot distinguish shades of red and green usually blue-green , but their ability to see is normal. There are no serious complications; however, those affected may not be considered for certain occupations involving transportation or the Armed Forces where color recognition is required.
Males are affected more often than females, because the gene is located on the X chromosome. Hemophilia A. Hemophilia A is a disorder where the blood cannot clot properly due to a deficiency of a clotting factor called Factor VIII. This results in abnormally heavy bleeding that will not stop, even from a small cut. People with hemophilia A bruise easily and can have internal bleeding into their joints and muscles.
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