A. Healing of wound
B. Development and growth
C. Vegetative propagation
D. All of these
Show AnswerAnswer = Option D
Cell Cycle
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
Show AnswerAnswer = Option A
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
Show AnswerAnswer = Option C
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
Show AnswerAnswer = Option D
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
Show AnswerAnswer = Option C
Crossing over occurs between
A. Sister chromatids
B. Non sister chromatids
C. Independent chromatids
D. Each and every chromatid
Show AnswerAnswer = Option B
Each bivalent has
A. 3 chromatids
B. 4 chromatids
C. 5 chromatids
D. 2 chromatids
Show AnswerAnswer = Option B
Pairing of homologous chromosomes is completed in
A. Leptotene
B. Zygotene
C. Pachytene
D. Diplotene
Show AnswerAnswer = Option C
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
Show AnswerAnswer = Option A
The longest phase of meiosis I is
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
Show AnswerAnswer = Option C