Mark the correct statements.

1. Chromosomes contain
DNA.
hereditary information that guides the functions of the cell.
fatty acids.

2. Chromosomes are located
in the cell membrane.
in the cell's nucleus.
in the DNA chain.

3. Chromosomes are found
in 23 pairs in every cell.
in 22 pairs in the sex cells.
in 23 pairs in all cells except for the sex cells.

4. The stem cell of a gamete contains the following sex chromosomes:
X, in females.
Y, in males.
XX, in females.
XY, in males.

5. Egg cells have the following sex chromosomes:
XX
X
XY

6. Sperm cells have the following sex chromosomes.
YY
Y (or X)
XY
X (or Y)

7. The genotype
means an individual's genetic make-up.
has no effect on the phenotype.
is different in all individuals.

8. The phenotype
is the same in all individuals.
is not influenced by the living environment.
is formed by the individual's genotype and the living environment.

9. Identical twins
have the same genotype.
have the same phenotype
have similar genotypes and phenotypes.

10. Individual development is not affected by
the genomes of the individual's grandparents.
the mother's experiences and lifestyle during pregnancy.
the individual's own experiences.