A female is not color blind, but half her sons are color blind. Her daught corre

Question

A female is not color blind, but half her sons are color blind. Her daught correct? 5. ers are not color blind. Which conclusion is a. The father is not color blind but is heterozygous for the color blindness gene. b. The woman is heterozygous for the color blindness gene. c. The father is color blind d. Color blindness is autosomal. 6, Examples of sex-linked genetic diseases include . a. Huntington disease, hemophilia, and Klinefelter syndrome b. Down syndrome, cri-du-chat, and hemophilia c sickle-cell anemia, red-green color blindness, and polyploidy d. Duchenne muscular dystrophy, Down syndrome, and red-green color blindness e. hemophilia, red-green color blindness, and Duchenne muscular dystrophy 7. An individual having 44 autosomes and one X chromosome would be classified as a. Polyploidy b. Aneuploidy c. having Klinefelter syndrome d. having Turner syndrome e. both b and d 8. Duchenne muscular dystrophy is caused by a sex-inked allele. Its victims are almost always boys who die before the age of 20 years. Why is this disorder rare in girls? a· The allele is carried on the Y chromosome. b. Males with Duchenne muscular dystrophy are sterile c. Sex-linked traits are never seen in girls d. A girl must receive the allele from both her mother and her father 9. Under what conditions can a sex-linked trait be expressed if only one allele for that trait is present? a. b. c. d. when the allele is on the X chromosome in the male when the allele is recessive when the allele is on the X chromosome in a female when the allele is on the Y chromosome in the female 10. A person who is a carrler for a genetic disease has which of the following phenotypes? a. The person has only a mild case of the disease b. The person does not have the disease in childhood but will develop the disease later in life. c. The person does not have the disease. d. The person will develop the disease after encountering an environmental trigger. 11. If a disease is caused by a dominant allele, it means that a person with the disease a. will pass it on to children only if the person's mate also has the disease b. needs only one copy of the ailele that causes the disease C. will always pass it on to children 12. Inheritance of an autosomal dominant disorder differs from inheritance of an autosomal recessive disorder in that a. b. c. d. a dominant disorder may be passed on only if both parents are affected a dominant disorder is evident only if the offspring is homozygous for the allele a dominant disorder is more often seen in females a dominant disorder may be passed on even if only one parent is affected

Explanation / Answer

Q 5:- the answer should be option (b) the women is heterozygous for the colour blindness gene.

Q6:- the answer should be option (e) Hemophilia, red green colour blindness and duchenne muscular dystrophy.

Q7:- the answer should be option (e) both b and d

- the individual genotype is - 44+ XO, it is called Turner's syndrome and the individual will be aneuploid.

Q8. The answer should be option (d) A girl must recieve the allele from both her mothers and fathers.

Q9 :- the answer should be option (a) when the alleles is on X-chromosome in the male.

-Male only contains one x-chromosome so if it is affected then the individual will be affected for the disease in x-linked traits.

Q10:- the answer show be option (c) the person does not have the disease.

Q11:- the answer should be (b) needs only one copy of the allele that causes the disease.

Q12:- the answer should be option (d) a dominant disorder may be passed on even if only one parent is affected.

Hopefully it helps if problems arises plz comment thanks.

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