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The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is ___.
25%
75%
50%
100%
0%
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- A boy has dimples (dominant trait of autosomal gene D) and is left-handed (recessive trait of autosomal gene H ). Which of these could NOT be the genotype of his MOTHER? dd HH DD hh Dd Hh DD HhFamilial polydactyly is an autosomal dominant trait that results in extra fingers or toes. An affectedwoman and a normal man have a normal son. This couple wants to have 4 more children. What is theprobability that 3 of the children are polydactylA couple has three children one of the has Cystic Fibrosis (autosomal recessive). If neither parent is affected. What is the probability that their next child will be a sick boy? a. ¼ b. ½ c. 1/8 d. 3/8 e. 1/16
- Consanguinity is having offspring together who are blood-related. Their children have a higher risk of having a second child with an autosomal recessive condition A. Both statements are correct B. Both statements are incorrect C. Statement 1 is correct. Statement 2 is incorrect D. Statement 2 is correct. Statement 1 is incorrectA couple is both heterozygous for the autosomal recessive disease cystic fibrosis (CF). What is the probability that their first child will either be a girl or have CF but not both?A color blind (X linked recessive) female marries a normal male. What percent of her daughters will be color blind.
- A woman with Huntington’s disease (autosomal dominant trait, and she is heterozygous) has children with a healthy man. What proportion of their children will inherit Huntington’s disease?Color blindness is an x-linked recessive disorder. A woman who is a carrier for color blindness has children with a man who is color blind. Determine the probability that their child will be color blind. a. 0 % b. 25% c. 50% d. 100%Hemophilia is a disease caused by a gene found on the X chromosome. Therefore, it is a sex-linked disease which is caused by the recessive allele. Suppose, a man with hemophilia marries a woman who is homozygous dominant for the trait. Predict the genotype of the man. (XH = normal; Xh= hemophiliac) * a. XH Y b. XHXh c. XhXh d. Xh Y
- A man and woman are both of normal pigmentation, but both have one parent who is albino (without melanin pigmentation). Albinism is an autosomal (not sex-linked) recessive trait. What is the probability that their first child will be an albino? A. 0% B. 1/8 C. ¼ D. ½ E. 100%.A woman develops Huntington's disease and already has 3 children. What is the chance that the mother has passed this disease onto her 3 children? Is this autosomal dominant or recessive?A man who is achondroplastic dwarf with normal vision marries a color-blind woman of normal height. The man's father was six feet tall, and both the woman's parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red-green color blindness is X- linked recessive. What proportion of their sons would be color-blind and of normal height ? 1. All 2. None 3. Half 4. One out of four
