Search any question & find its solution
Question:
Answered & Verified by Expert
In which of the following organism, males are heterogametic and have chromosome number different than females?
Options:
Solution:
2375 Upvotes
Verified Answer
The correct answer is:
Bugs
XO type (XX-XO type):
It is observed in large number of insects, grasshopper. Numbers of chromosomes are different in male and female individuals.
Here, female shows homogameity (XX) while male shows hetrogameity (XO). It is clear that, all eggs (ova) bear an additional X-chromosome besides the autosomes while only 50% of the sperms bear X-chromosomes. In grasshopper, eggs fertilized by (A+X) type sperm become females while those fertilized by (A+O) type sperm become males. Therefore, sperm determines the sex of the offsprings.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.