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An example of monohybrid inheritance in man is…

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BIOLOGY

An example of monohybrid inheritance in man is

A. astigmatism

B. cretinism

C. hyperthyroidism

D. albinism

QUICK ANSWER…

D

DETAILS…  

Monohybrid inheritance is the inheritance of the same type of trait from both parents. For example, if T and t are dominant and recessive traits, then a monohybrid offspring will be either TT or tt.

Albinism results from the inheritance of two of its traits from both parents.

Now for the right answer to the above question:

  1. A is not the right answer. astigmatism is a defect of the eye; it is not inherited.
  2. B is incorrect. cretinism is the acute deficiency in iodine; it is not an inheritable disorder.
  3. C is incorrect. hyperthyroidism is the excessive release of hormone from the thyroid gland, it is not a hereditary disease.
  4. D is correct. albinism is a monohybrid disorder.

KEY-POINTS…

You may please note this/these:

  • Monohybrid inheritance is the inheritance of the same kind of dominant or recessive traits, each from both parents.
  • For example, monohybrid inheritance results in the inheritance of two dominant TT, each from both parents or the inheritance of two recessive tt, each from both parents.
  • Albinism is a good example of a monohybrid disorder.

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/ culled from 2020 JAMB-UTME biology past question 39 /

1 Answers

  1. +1 Votes Thumb up 0 Votes Thumb down 0 Votes

    Hybrid Is An Offspring From A Cross(either Of Two Pure Traits Or Two Pairs Of Contrasting characters) between Parents That Are Genetically Different. So,albinism occurs From Two Pure(mono) characters.

    ADEBODUN HELLEN - Apr 19, 2022 | Reply


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