[3S] Karyotyping

Question 1

Fluid required for baby karyotyping

Answer 1

Amniotic Fluid or Umbilical Blood

Question 2

Is the number and appearance of chromosome in the nucleus of a eukaryotic cell

Answer 2

Karyotype

Question 3

Information on the karyotype

Answer 3

1. Size of chromosome
2. Position of centromere
3. Presence of secondary constrictions
4. Size of satellites

Question 4

Study of nuclear genome

Answer 4

Chromosome

Question 5

comes from the Greek word “Karyon” which means nucleus

Answer 5

Karyotype

Question 6

the study of whole sets of chromosomes

Answer 6

Karyology

Question 7

the standard format of representing chromosomes as diagram when the haploid set of chromosomes of an organism are ordered in a series of decreasing size

Answer 7

Idiogram or Karyogram

Question 8

Show larger differences between smaller and larger chromosome in a set. Have more acrocentric chromosomes and relatively advanced feature

Answer 8

Asymmetric karyotype

Question 9

Show lesser difference between smaller and larger chromosome in a set. Have more metacentric chromosomes and no advanced feature

Answer 9

Symmetric karyotype

Question 10

a Russian scientist suggested that in flowering plants there is a predominant trend towards karyotype asymmetry. This trend has been carefully studied in the genus Crepis of the family compositae

Answer 10

G.A. Levitzky

Question 11

Asymmetric karyotype = more _______ organisms
More Symmetric karyotype = less ________ features of the organism

Answer 11

complex
advanced

Question 12

↑Acrocentric ration = ↑Asymmetric karyotype = _ Level of evolution

Answer 12

↑

Question 13

• Proportion of metacentric, acrocentric chromosomes in a set.
• Ratio between size of largest and smallest chromosomes in a set.

Answer 13

Degree of asymmetry

Question 14

Higher the proportion of acrocentric chromosomes, Greater the value of size ratio, more asymmetrical is a karyotype

Answer 14

Interpretation

Question 15

is the process of pairing and ordering all the chromosomes of an organism, thus providing a genome-wide snapshot of an individual’s chromosomes.

Answer 15

Karyotyping

Question 16

can reveal subtle structural changes such as chromosomal translocations, deletions, duplications, or inversions. Moreover, it can reveal changes in chromosome number associated with aneuploid conditions, such as trisomy 21 (Down syndrome).

Answer 16

Karyotyping analysis