The pattern of sex determination found in drosophila is:
Correct answer: B. XY - XX
- A. WZ-ZZ type
- B. XY - XX
- C. X0 - XX
- D. Compound Sex
Explanation
In Drosophila, the sex determination is based on the presence of sex chromosomes. Females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). This type of sex determination system is known as the XY system. Therefore, option b is correct.
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About X-linked Recessive Inheritance
X-linked recessive inheritance involves genes on the X chromosome, so males express a recessive allele with no corresponding allele on their single X chromosome, while females may be carriers. Pedigrees cover haemophilia and red-green colour blindness, including carrier mothers, affected sons and the absence of father-to-son transmission.
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