SUMMER-II (JULY) 2018 (Total poit D. None of the abot 8. What is the kary A. 47,
ID: 300872 • Letter: S
Question
SUMMER-II (JULY) 2018 (Total poit D. None of the abot 8. What is the kary A. 47, XXY C. 47, XYY . Which of the following is the best sample extra X chromos for the investigation of human A. B. C. D. Onion root tip Rat testes Blood leukocytes None of the above D. None of the ab What is the ka Down syndro A. 47, XX,+21 B. 46, XX, 21 47, XX,+18 D. None of the 9. 2. Which of the following is true for the length A. The largest is about 10um long and the B. The largest is approximately 10cm long and C. The p arm and q arm of chromosomes are D. All of the above are true of human chromosomes? smallest is about 2 jum long the smallest is about 2 cm long always the same C. 10. What is the A. 47, XY +2 B. 47. XX +2 D. None of t 11. Which o 3. Which of the following statement is/are true C. 45, A. B. C. D. for karyotype? Assemblage of metaphase chromosomes Arranged in pair Both A & B None of the above karyoty Syndro A. 45, X B. 47, XY C. 44, X D. None You are viewing a patient's karyotype. You see 23 chromosomes total. There are no 4. homologous chromosomes. Which cell are 12. Kary B. Zygote C. Skin cell D. Human leukocyte triso A. 47 C. Bot D. No arranged A. According to the order of descending length 13- Th ?.? D. T and position of centromere A. P B. According to thickness of chromosomes C. Based on the abnormalities present on the chromosome D. None of the above 6. Which of the following statement is true for A. B. C. 14 chromosome? Chromosome bands are observed with ethidium bromide staining Short arms are designated p and long arms are designated q There are always 23 chromosomes in human None of the above A. B. C. D. D.Explanation / Answer
Answer 1
Blood leukocytes
because they contain genetic material
Answer 2
The largest is about 10micrometer long and and smallest is about 2 micrometer
Because DNA are small in nature
Answer 3
Both A & B
Because according to order of descending length and position of the centromere.
Answer 4
Egg cell
Because only fertilized egg consis 23 chromosome while rest consist 46 chromosomes
Answer 5
None of the above
Because the rest are arranged in pairs, numbered 1 through 22, from largest to smallest.
Answer 6
Chromosome band are observed with ethidium bromide staining
Because this process take place in electrophoresis
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