Mustard was growing in two fields- A and B. While Field A produced brown coloured seeds, field B produced yellow coloured seeds. It was observed that in field A, the offsprings showed only the parental trait for consecutive generations, whereas in field B, majority of the offsprings showed a variation in the progeny. What are the probable reasons for these?
Answers 2
Answer:
The offspring of mustard plants in field A produced brown coloured seed whereas the offspring of mustard plants in field B produced variation in colours. The probable reason for this will be that the brown colour phenotype is a dominant character and the yellow colour phenotype is a recessive character. The plants in field A will have dominant genotype (BB) and plants in field B will have recessive genotype (bb). Therefore, the cross-pollination between the plants will produce only dominant character in field A and both dominant and recessive character in field B.
Explanation:
The plants of field A with genotype (BB) and brown seeds when cross-pollinated with plants of field B with genotype (bb) and yellow seeds resulted in plants with genotype (Bb), hence the progeny were all brown. Also, the self-pollination in this case (BB x BB) resulted in brown seeds only.
Whereas, plants of field B with genotype (bb) and yellow seeds when cross-pollinated with plants of field A with genotype (BB) and brown seeds resulted in plants with genotype (Bb), hence the progeny were all brown. Also, the self-pollination in this case (bb x bb) resulted in yellow seeds. Therefore, the progeny in field B were of varied colours.
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picklesbasc
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Answer:
the offspring of mustard plant in field A produced brown coloured seed wheare as in field B it produce variations in colour
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Author:
sonialam
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