NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A karyotype is ____
A
the physical traits a person has
B
a method of identifying cross over events
C
all the possible gametes a person could produce
D
a photograph of all the chromosomes in a single cell from an individual
E
a list of all the genes a person carries
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 karyotype is the general appearance of the complete set of chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes.

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: -The laboratory specialist uses a microscope to examine the size, shape, and number of chromosomes in the cell sample. The stained sample is photographed to show the arrangement of the chromosomes. This is called a karyotype.

Detailed explanation-5: -A karyotype is a visual representation of the number and structure of all the chromosomes and provides a low-resolution genome-wide screen for chromosomal variants.

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