CHROMOSOME Flashcards

1
Q

complete set of chromosomes of an organism

A

genome

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2
Q

a chromosome in which the **centromere is at one end **and with only one arm and is not present in humans

A

telocentric chromosome

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3
Q

chromosomes that lack centromere due to effects of chromosome breaking process like irradiation

A

acentric chromosomes

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4
Q

region of chromome that contains kinetochore; serves as the site of attachment of spindle fiber

A

centromere

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5
Q

carrier of hereditary traits

A

chromosome

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6
Q

haploid number of human chromosomes

A

23

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7
Q

longitudinal subunitss of a chromosome

A

chromatids

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8
Q

region of chromome that contains kinetochore; serves as the site of attachment of spindle fiber

A

centromere

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9
Q

contains two centromeres

A

dicentric chromosomes

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10
Q

contains single centromere

A

monocentric chromosomes

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11
Q

produced by heat treating the chromosomes in saline solution before staining with giemsa

A

R-bands

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12
Q

how many paired chromosomes does a human have?

A

46

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13
Q

male chromosome that is relatively smaller and telocentric

A

Y chromosome

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14
Q

a classification of chromosome in which the centromere is located in the middle and with equal arm length

V shape

A

metacentric chromosome

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15
Q

a chromosome in which the centromere is near the middle and with arms of slightly different lengths

L shape

A

sub-metacentric chromosome

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16
Q

chromosomes are treated with** trypsin enzyme** that partially digest chromosomal proteins when exposed to dye called Giemsa

A

G-Banding

17
Q

binds proteins to protect the chromosome ends

A

telomere

18
Q

chromosome in which the** centromere is near one end** and with arms of different lengths

A

acrocentric chromosome

19
Q

DNA sequences at the ends of chromosomes

A

telomere

20
Q

material of the chromosomes** composed of nucleosomes** joined together resembling beads on a string

A

chromatin fiber

21
Q

contains more than 2 centromeres

A

polycentric chromosomes

22
Q

total number of 23 pairs and are marked as X and Y

A

sex chromosomes

23
Q

female chromosome

A

X chromosome