Question

Karyotyping Group of answer choices a. shows chromosomes at they appear in metaphase of meiosis II...

Karyotyping

Group of answer choices

a. shows chromosomes at they appear in metaphase of meiosis II

b. can reveal alterations in chromosome number

c. examines points of crossing over

d. reveals the presence of cancerous genes

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Answer #1

Solution:-

Karyotyping is a process which is used to examine the set of chromosomes by staining them with a dye called Giemsa stain. It is applied after cells are arrested in the mitotic cell division by solution called colchicine usually in metaphase or premetaphase when chromosomes are most condensed. It is done in order to determine the abnormalities in chromosomes, any alteration happen in chromosomes or number of chromosomes count of individual organism. It does not help in examine cancerous genes or in examine the points of crossing over because it only take photograph of condensed chromosomes so that one can reveal the chromosomes number alteration.

So, the correct answer is option (b) karyotyping can reveal alterations in chromosome numbers.

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