Human karyotype
1. How many pairs of chromosomes
are there?
2. How many chromosomes does a
human cheek cell contain?
3. How many chromosomes does a
human ovum contain?
4. How are the chromosomes
arranged?
5. What is the sex of this person?
6. Reason for your answer:
are arranged
chromosomes
are
size.
arranged
Human
23 pairs
are arranged
according
There are
pairs.
chromosomes
to
Chromosomes
karyotype
of chromosomes.
The
in homologous
size.
easier
are arranged
pairs.
Chromosomes
in homologous
more difficult
chromosomes
according
The
arranged
are
size.
to
1. How many pairs of
23 pairs
chromosomes are there?
A cheek cell is a normal body
cell, therefore it contains 23
2. How many chromosomes does
pairs of chromosome, i.e. 46
a human cheek cell contain?
chromosomes
3. How many chromosomes does An ovum is a gamete, therefore it
contains only 23 chromosomes
a human ovum contain?
4. How are the chromosomes
arranged?
in homologous pairs.
5. What is the sex of this person?
male
6. Reason for your answer: In humans a sex chromosome
arrangement of XY is male (XX is
female)