Entry Test MCQ :: Cell Cycle

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21.

Homologous chromosomes are

A.	Similar and identical	B.	Identical but not similar
C.	Not similar and not identical	D.	Similar but not identical

22.

The longest phase of meiosis I is

A.	Metaphase	B.	Anaphase
C.	Prophase	D.	Telophase

23.

Tetrad or bivalent is

A.	Paired homologous chromosome but not fused complex structure	B.	2 unpaired homologous chromosome
C.	Paired and fused complex structure	D.	None of these

24.

Pairing of homologous chromosomes is completed in

A.	Leptotene	B.	Zygotene
C.	Pachytene	D.	Diplotene

25.

Each bivalent has

A.	3 chromatids	B.	4 chromatids
C.	5 chromatids	D.	2 chromatids

26.

Crossing over occurs between

A.	Sister chromatids	B.	Non sister chromatids
C.	Independent chromatids	D.	Each and every chromatid

27.

Inability of chromosomes to segregate during anaphase and telophase of meiosis is called

A.	Crossing over	B.	Chromosomal disjunction
C.	Chromosomal nondisjunction	D.	None of these

28.

Which statement is incorrect?

A.	Down's syndrome involves autosome	B.	In Turner's syndrome 2n-1
C.	In Klinefelter's syndrome XYY	D.	In Down's syndrome sperms are commonly involved

29.

Apoptosis

A.	Cell death due to tissue damage	B.	Causes inflammation
C.	Internal programme of events by which cell commits suicide	D.	Damages neighboring cells

30.

A cell of human being has 46 chromosomes; it divides to form some daughter cells, each having 23 pairs of chromosomes. The division would be

A.	Mitosis	B.	Meiosis
C.	Amitosis	D.	Budding