Question

Consider the following statements.
a. Pairing of chromosomes that are genetically and structurally identical is known as non-homologous pairing.
b. The nuclear envelope is perforated by nuclear pores that serve as pathways between the nucleoplasm and cytoplasm.
c. Structurally, the golgi apparatus is made up of a stack of flattened secures, vacuoles and number of small vesicles.
d. Sometimes, a number of ribosome's associate themselves with a messenger RNA to form polysomes.
Which of these statements are incorrect?

• A. $a$ and $b$
• B. $b$ and $d$
• C. $a$ and $d$
• D. $b$ and $c$

Answer 1

The correct option is A $a$ and $b$

• Pairing of chromosomes that are genetically and structurally identical is known as homologous pairing during the meiosis.
• The nuclear envelope is perforated by nuclear pores that serve as pathways between the nucleoplasm and cytoplasm.
• The endoplasmic reticulum is made up of a stack of flattened cisternae, vacuoles and number of small vesicles.
• Sometimes, a number of ribosome's associate them-selves with a messenger RNA to form polysomes during translation.

So, a and b statements are incorrect.