Chromosomes are thick thread like structures that appears in ……..during cell division.
a) Mitochondria
b) endoplasmic reticulum
c) nucleus
d) peroxisomes
In which phase, cell chromosomes become uncondensed and look like very fine network called chromatin network?
a) mitotic anaphase
b) meiotic metaphase
c) mitotic and meiotic phase
d) interphase
Explanation: Interphase is the portion of the cell cycle that is not accompanied by visible changes under the microscope, and includes the G1, S and G2 phases. During interphase, the cell grows, replicates its DNA and prepares for mitosis
Who observed chromosomes for the first time?
a) Gregor J. Mendel
b) Fredrick Mischer
c) Walther Fleming
d) Robert Brown
Explanation: he was German embryologist. He observed chromosomes in 1882 in rapidly dividing salamander larvae
Who proposed the term “Chromosome”?
a) Waldeyer
b) Fredrick Mischer
c) Walther Fleming
d) Robert Brown
Explanation: chroma means colour and soma means body I,e, colored bodies
In which of the following cells, proper chromosomes are found?
a) human cells
b) plant cells
c) eukaryotic cells
d) prokaryotic cells
Explanation: eukaryotic chromosome is made up of DNA and proteins
In which of the following cells, proper chromosomes are NOT found and only its DNA is referred as chromosome?
a) human cells
b) plant cells
c) eukaryotic cells
d) prokaryotic cells
Explanation: prokaryotic chromosome is made up of DNA only
