PATHOLOGY

PATHOLOGY MCQ

GENETICS AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a karyotype?
A
a sex-linked genetic disorder
B
a picture of a baby before it is born
C
a picture of the chromosomes in a cell
D
fluid that surrounds a baby before it is born
Explanation: 

Detailed explanation-1: -Definition. A karyotype is an individual’s complete set of chromosomes. The term also refers to a laboratory-produced image of a person’s chromosomes isolated from an individual cell and arranged in numerical order. A karyotype may be used to look for abnormalities in chromosome number or structure.

Detailed explanation-2: -A picture of all 46 chromosomes in their pairs is called a karyotype. A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.

Detailed explanation-3: -A karyotype test checks the chromosomes in your cells to: See whether you have a full set of 46 chromosomes. Having too many or too few chromosomes can cause serious problems with health, growth, and normal development, such as Down syndrome (extra chromosome 21) and Turner syndrome (missing X chromosome).

Detailed explanation-4: -A karyotype is an organized profile of a person’s chromosomes. Two chromosomes specify sex, XX for female and XY for male. The rest are arranged in pairs, numbered 1 through 22, from largest to smallest.

Detailed explanation-5: -A Karyogram is a way used to depict chromosomes, the way chromosomes are organized in the image makes them easy to visualize. A karyogram photographically represents all pairs of homologous chromosomes in a somatic cell of an organism in the order of their decreasing size.

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