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Principles Of Inheritance And Variation

Question

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Write the types of sex-determination mechanisms the following crosses show. Give an example of each type

(ii) Female ZW with Male ZZ

Solution

The type of sex determination mechanism shown in female ZW with male ZZ is female heterogamety.

Example - Birds

Some More Questions From Principles of Inheritance and Variation Chapter

What are the real determinants of what an organism will become ?

What is the unique feature of F1 generation ?

What will be the genetic make up of an organism which suffers from sickle cell anaemia ?

What do the symbols square and circle in a pedigree chart indicate ?

Define heterogamy. Give an example.

How many chromosomes are found in human cells ?

Why is male Drosophila regarded as heterogametic ?

What term is used for the two chromatids resulting from the interchange of segments during crossing over ?

What is name of a cross in which a dominant individual is crossed with a recessive parent?

Distinguish between homogametic and heterogametic organisms.

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