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hammer [34]
3 years ago
6

Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Down syndrome is a geneti

c disorder that is also called trisomy 21. What would trisomy 21 look like in a karyotype?
missing chromosome 21

extra chromosome 21

missing sex chromosome

extra sex chromosome
Biology
2 answers:
aalyn [17]3 years ago
5 0

Answer:

Extra chromosome number 21

Explanation:

Down's syndrome results from the presence of an extra chromosome number 21. This phenomenon where one has three members of a homologous chromosome is called trisomy. Such children are mentally deficient, have a slit eyed appearance and have low chances of surviving because of reduced resistance to infection.

ser-zykov [4K]3 years ago
4 0

Answer:

the answer is extra chromosone 21 on edg 2020

Explanation:

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