A normal-visioned man whose father was colour-blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind ? (1) 50% (2) 100% (3) Zero percent (4) 25%

A normal-visioned man whose father was colour-blind, marries a woman whose father was also
colour-blind. They have their first child as a daughter. What are the chances that this child would be
colour-blind ?
(1) 50% (2) 100% (3) Zero percent (4) 25%
by

1 Answer

Answer :

(3) Zero percent
by

Related questions

.A normal-visioned man whose father was colour- blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind? (a) 100% (b) Zero percent (c) 25% (d) 50%

Description : .A normal-visioned man whose father was colour- blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind? (a) 100% (b) Zero percent (c) 25% (d) 50%

Last Answer : Zero percent

A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind? (a) 25% (b) 0% (c) 50% (d) 75%

Description : A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind? (a) 25% (b) 0% (c) 50% (d) 75%

Last Answer : (c) 50%

A marriage between normal visioned man and colour blind woman will produce offspring (a) colour blind sons and 50% carrier daughter (b) 50% colourblind sons and 50% carrier daughter (c) normal males and carrier daughters (d) colour blind sons and carrier daughters.

Description : A marriage between normal visioned man and colour blind woman will produce offspring (a) colour blind sons and 50% carrier daughter (b) 50% colourblind sons and 50% carrier daughter (c) normal males and carrier daughters (d) colour blind sons and carrier daughters.

Last Answer : (d) colour blind sons and carrier daughters.

.If a colour blind woman marries a normal visioned man, their sons will be (a) all colour blind (b) all normal visioned (c) one-half colour blind and one-half normal (d) three-fourths colour blind and one-fourth normal.

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Last Answer : (a) all colour blind

A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. This boy (a) may be colour blind or may be of normal vision (b) must be colour blind (c) must have normal colour vision (d) will be partially colour blind since he is heterozygous for the colour blind mutant allele

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Last Answer : (a) may be colour blind or may be of normal vision

.A person whose father is colour blind marries a lady whose mother is daughter of a colour blind man. Their children will be (a) all sons colour blind (b) some sons normal and some colour blind (c) all colour blind (d) all daughters normal.

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Last Answer : (d) all daughters normal.

A woman with two genes for haemophilia and one gene for colour blindness on one of the ‘X’ chromosomes marries a normal man. How will the progeny be? (a) 50% haemophilic colour-blind sons and 50% normal sons. (b) 50% haemophilic daughters (carrier) and 50% colour blind daughters (carrier). (c) All sons and daughters haemophilic and colour- blind. (d) Haemophilic and colour-blind daughters.

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Last Answer : (b) 50% haemophilic daughters (carrier) and 50% colour blind daughters (carrier).

A white woman marries a black man. They have four children — 2 sons and 2 daughters. What proportion of these chi 1dren is likely to be black (a) 25% (b) 50% (c) 100% (d) none

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Last Answer : Ans:(d)

.A normal woman, whose father was colour-blind is married to a normal man. The sons would be (a) 75% colour-blind (b) 50% colour-blind (c) all normal (d) all colour-blind.

Description : .A normal woman, whose father was colour-blind is married to a normal man. The sons would be (a) 75% colour-blind (b) 50% colour-blind (c) all normal (d) all colour-blind.

Last Answer : (b) 50% colour-blind

4. A haemophilic man marries a normal homozygous woman. What is the probability that their son will be haemophilic a) 100% b) 75 % c) 50% d) 0%

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Last Answer : d) 0%

Both husband and wife have normal vision though their fathers were colour blind. The probability of their daughter becoming colour blind is (a) 0% (b) 25% (c) 50% (d) 75%.

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Last Answer : (a) 0%

A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind ? (a) Nil (b) 0.25 (c) 0.5 (d) 1

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Last Answer : b) 0.25

If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is (a) 0 (b) 0.5 (c) 0.75 (d) 1.

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Last Answer : a) 0

If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child? (a) 25% (b) 100% (c) No chance (d) 50%

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Last Answer : 25%

Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an albino? (a) 50% (b) 75% (c) 100% (d) 25%

Description : Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an albino? (a) 50% (b) 75% (c) 100% (d) 25%

Last Answer : (d) 25%

A family of five daughter only is expecting sixth issue. The chance of its being a son is (a) zero (b) 25% (c) 50% (d) 100%.

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Last Answer : (c) 50%

Of both normal parents, the chances of a male child becoming colour blind are (a) none (b) possible only when all the four grand parents had normal vision (c) possible only when father’s mother was colour blind (d) possible only when mother’s father was colour blind.

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When a color blind man marries a woman pure for normal color vision, it is probable that one of the following situations may result. Is it probable that a) all the children will be color blind b) all the grandchildren will be color blind c) only the sons will be colorblind d) half the grandsons will be color blind

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.Haemophilic man marries a normal woman. Their offspring will be (a) all haemophilic (b) all boys haemophilic (c) all girls haemophilic (d) all normal

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.A diseased man marries a normal woman. They get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is (a) sex linked dominant (b) sex linked recessive (c) sex limited character (d) autosomal dominant.

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If a dwarf pea plant was treated with gibberellic acid, it became as tall, as tall pea plants. If these pea plants are crossed with pure tall pea plants, what will be the phenotypic ratio in F1 generation? (a) All dwarf plants (b) 50% tall and 50% dwarf plants (c) 75% tall and 25% dwarf plants (d) 100% tall plants

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For 100% modulation, power in each sideband is ________ of that of carrier? a) 50% b) 70% c) 60% d) 25%

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100% modulation in AM means a corresponding increase in total power by: A. 25% B. 75% C. 100% D. 50%

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In the P generation, a tall plant is crossed with a short plant. The probability that an F2 plant will be tall is a. 50%. b. 75%. c. 25%. d. 100%.

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Before a woman marries a man, does she wonder what their children will look like?

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A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offspring? (a) A, B, AB and O (b) O only (c) A and B only (d) A, B and AB only

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A colour blind girl is rare because she will be born only when (a) her mother and maternal grand father were colour blind (b) her father and maternal grand father were colour blind(c) her mother is colour blind and father has normal vision (d) parents have normal vision but grand parents were colour blind

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A man of A-blood group marries a woman of AB blood group. Which type of progeny would indicate that man is heterozygous A? (a) AB (b) A (c) O (d) B

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Last Answer : ANSWER : B

If atmospheric temperature and dew point are nearly equal, then the relative humidity is (A) Zero (B) 50% (C) Almost 100% (D) unpredictable

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Last Answer : (C) Almost 100%

The percentage of water for making a cement paste of normal consistency varies from (a) 15 to 25% (b) 25 to 35% (c) 35 to 50% (d) 50 to 60%

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Last Answer : (b) 25 to 35%

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Last Answer : (a)Total sales revenue will also increase by 50% ;

What A woman with hemophilia and a men without hemophilia get married . what are the chances that their first child will have hemophilia?

Description : What A woman with hemophilia and a men without hemophilia get married . what are the chances that their first child will have hemophilia?

Last Answer : 0.5

If there was a family of hunchback with two sons and one daughter, then the first son married a girl and then the girl became a hunchback and then the other son also married a woman and then the woman became a hunchback too, but then when the daughter married a man, the girl's hunchback is gone. Why did the girl's hunchback lost?

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Last Answer : I bet that was a weight off her shoulders.

If a man marries 4 people, will they have any problem ? Is it possible to get syphilis or any other sexually transmitted disease ?

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When two transformers are operating in parallel, they will share the load as under: (A) proportional to their impedances. (B) inversely proportional to their impedances. (C) 50% - 50% (D) 25%-75%

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Last Answer : Ans: A High rating transformer has higher impedance. kVA rating α Impedance of transformer

According to leading experts in software development, the margin of error when estimating project costs is 100% and the margin of error in project scheduling time is 25%.

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Top and side views of a photographer’s setup for a product shoot are shown in the figure. P is the primary light source, S is the secondary light source, R is the reflector and Q is the camera position. If the Primary Light Source is at 100% intensity, and the secondary light is at 25% intensity, which one of the given options is the photograph taken using this setup?

Description : Top and side views of a photographer's setup for a product shoot are shown in the figure. P is the primary light source, S is the secondary light source, R is the reflector and Q is the camera ... 25% intensity, which one of the given options is the photograph taken using this setup?

Last Answer : D

Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character. (a) The female parent is heterozygous. (b) The parents could not have had a normal daughter for this character. (c) The trait under study could not be colour blindness. (d) The male parent is homozygous dominant.

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When the average age of a father, mother and their son was 90 years, the son got married and a child was born just 6 year after the marriage when child turned 14 years the average age of the family is 80yrs. Find the age of daughter - in - law at present? A) 55 B) 56 C) 57 D) 58

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Last Answer : B) total age of father, mother and son at the time of son's marriage = 90*3 =270 present age of family father, mother, son, daughter-in-law, child = (father, mother, son age at the time of marriage ... 60)+ daughter-in-law present age + 14 = 80*5 =400 daughter-in-law present age= 400-344 = 56yrs