Q24: Can you give other examples of sex-limited traits in animal ?
Q25: Predict the genotypic ang phenotypic ratios in the offspring if the mother is bald and the father is not bald. perform a cross using a punnett square ?
Q26: In what way are sex-limited and sex-influenced characters similar ?
Q27: What is the main difference between sex-limited and sex-influenced traits ?

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2015-09-20T22:43:03+08:00

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Q24) In cattle for instance, lactation is expressed in females but never in males. Both male and female however possess a gene pair for lactation.

Q25) The GR(genotypic ratio) is 100% non-bald for the PR: 50% or 1/2  X^{B}  X^{b} or (female non-bald) and 50% or 1/2  X^{B}  Y^{b}  or (male non-bald )
(see the attachment)

Q26) Sex-Influenced Traits & Sex-limited traits are both autosomal.  Autosomal, meaning that their genes are not carried on the sex chromosomes. ( X or Y)
Q27 The main difference between the two is that the sex-influenced is a trait that is more dominant in a certain sex and it takes two recessive genes on part of the less dominant sex for it to appear on the other hand,  sex-limited is a trait that is in both male and female but shows up only in one gender.

Hope this helps! :))
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