Question

Nebenkern is a part of
a. Foetus
b. Graafian follicle
c. Human ovum
d. Human sperm

Answer 1

Hint: It is a type of mitochondrial formation. It is also seen in some species of insects. It is a double stranded structure. It is helical in shape.

Complete answer:
Nebenkern is derived from s german word in the late 19 th century. Neben means beside and kern means nucleus. Nebenkern is a type of mitochondrial formation. It is also seen in some species of insects e.g. drosophila. It is a double stranded structure. It is helical in shape. It is formed in the sperm.

So the answer to the above question is D i.e human sperm.

After the process of meiosis is complete, the mitochondria wraps around each other and forms a spherical aggregate near the cell nucleus. The aggregate further elongates to form a double stranded structure. This structure transforms from sphere to helical. The tail of the sperm is known as flagellum. When the flagellum starts to elongate the aggregate formed ie Nebenkern starts to unfold along with the major and minor derivatives of mitochondria. These elongate down along the bundles of microtubules which is the core of the flagellum.

Note: Nebenkern is derived from s german word in the late 19 th century. Neben means beside and kern means nucleus. Nebenkern is a type of mitochondrial formation. It is also seen in some species of insects e.g. drosophila. It is a double stranded structure. It is helical in shape. It is formed in the sperm. The tail of the sperm is known as flagellum.