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Heredity and Evolution
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16/10/2021 4:54 pm
Topic starter
Fill in the following blanks with suitable words:
(a) Genes always work in …………………
(b) In pea plants, the gene for dwarfness is………………… whereas that for tallness is…………………
(c) Most people have………………… earlobes but some have………………… earlobes.
(d) A human gamete contains………………… chromosomes whereas a normal body cell has………………… chromosomes in it.
(e) All races of man have………………… blood groups.
(f) The………………… chromosomes for a………………… are XX whereas that for a………………… are XY.
1 Answer
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16/10/2021 4:55 pm
(a) Pairs.
(b) Recessive; Dominant.
(c) Free; attached.
(d) 23; 46.
(e) Four.
(f) Sex; Female; male.