Question
somal
s and
omes
a- Indicate the correct representation. Justify
the answer
the
errors in the other
b-
Specify
representations.
E11
The figure below represents the karyotype of
a child born with a certain number of
abnormalities: small head, deformed ears,
deformed hands and eyes, harelip and many
other deformations.
XX
"2
XX
УК УК VIS
XX
gileles
mar
a3
X)
19
a- Indicate the sex of the child. Justify the
answer.
b- What is the number of chromosomes of
this karyotype? Compare it with a karyotype
of a normal individual.
c- Specify the location of the chromosomal
abnormality in this karyotype. What name is
given to this abnormality?
E12
Answer
a- The sex of the child is female, as indicated by the two X chromosomes.
b- The number of chromosomes of this karyotype is 46, which is the same as a karyotype of a normal individual.
c- The chromosomal abnormality is located on the 19th chromosome and is known as a trisomy.