Q2 of 32 Page 21

Which of the following in humans are established genetic traits ? (Tick-mark the correct ones) in the box provided.

(i) Capacity to be a good cricketer


(ii) Curly hair


(iii) Left-handedness


(iv) Quality of voice


(v) Red-green colour blindness

(i) Capacity to be a good cricketer - No


(ii) Curly hair - Yes


(iii) Left-handedness - Yes


(iv) Quality of voice - No


(v) Red-green colour blindness - Yes


Capacity to be a good cricketer and quality of voice depends on learning and practice and not a passable human trait.


More from this chapter

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1

Mention if the following statements are True (T) or False (F) :

(i) Genetics and heredity are the same thing.


(ii) “Like begets like” this applies only to animals.


(iii) The entire human population shows variations.

 1

Mention the following :

(i) Total number of pairs of chromosomes in each body cell in humans ………………………


(ii) Any two animals having 19 pairs of chromosomes …………………………


(iii) Number of pairs of autosomes in humans ……………………………

 2

A certain couple got only four daughters in a row and no son. Does it mean that the husband does not produce Y-bearing sperms? Explain

 1

Approximately, how many genes have been Discovered in humans?