Chromosome Structure and Identification

Question 1

These are the parts of a chromosome.

Answer 1

1. Centromere
2. Telomere
3. p arm
4. q arm

Question 2

These are ways on how to classify chromosomes.

Answer 2

1. Autosomes and Sex Chromosomes
2. Centromere Location

Question 3

These are composed of 22 pairs of chromosomes and are 1 to 22 chromosomes.

Answer 3

Autosomal

Question 4

These are the 23rd pair and are made of X and Y.

Answer 4

Sex

Question 5

These are the classification based on centromere location.

Answer 5

1. Metacentric
2. Submetacentric
3. Acrocentric
4. Telocentric

Question 6

These are decribed as arms being roughly equal in length.

Answer 6

Metacentric

Question 7

These are the metacentric chromosomes.

Answer 7

1, 3, 16, 19 , and 20

Question 8

These are described as short and long arms of unequal length with the centromere more towards the end.

Answer 8

Submetacentric

Question 9

These are the submetacentric chromosomes.

Answer 9

2, 4-12, 17, 18 and X

Question 10

This is described to have the p arm as difficult to observe but still present and the centromere is very near to the end.

Answer 10

Acrocentric

Question 11

These are the acrocentric chromosomes.

Answer 11

13-15, 21,22 and Y

Question 12

This is described to be located at the terminal end of the chromosome and they do not exist in humans.

Answer 12

Telocentric

Question 13

This is described to have genes which code for rRNA, responsible for nucleolus information, contains SAT chromosomes.

Answer 13

Stalk/Satellite

Question 14

These are chromosomes that contains satellites.

Answer 14

SAT Chromosomes

Question 15

These are the group with the largest chromosomes.

Answer 15

Group A

Question 16

This is the largest chromosome; metacentric; 246 million base pairs.

Answer 16

Chromosome 1

Question 17

This is the second largest; submetacentric; 243 million base pairs.

Answer 17

Chromosome 2

Question 18

This is a metacentric chromosome with 199 million base pairs.

Answer 18

Chromosome 3

Question 19

These are chromosome 4 and 5 with two arms very different in size.

Answer 19

Group B

Question 20

This is a submetacentric chromosome with 191 million base pairs.

Answer 20

Chromosome 4

Question 21

This is a submetacentric chromosome with 181 million base pairs.

Answer 21

Chromosome 5

Question 22

This is the largest among group C; medium submetacentric; 170 million base pairs.

Answer 22

Chromosome 6

Question 23

These are chromosomes 6 to 12 and the X chromosome. They are medium in size and are all submetacentric.

Answer 23

Group C

Question 24

This is a submetacentric chromosome with 158 million base pairs.

Answer 24

Chromosome 7

Question 25

This chromosome is medium submetacentric and has 153 million base pairs.

Answer 25

X Chromosome

Question 26

This is a medium submetacentric chromosome with 146 million base pairs.

Answer 26

Chromosome 8

Question 27

This is a medium submetacentric chromosome with 136 million base pairs.

Answer 27

Chromosome 9

Question 28

This is a medium submetacentric chromosome with 135 million base pairs.

Answer 28

Chromosome 10

Question 29

This is a medium submetacentric chormosome with 134 miliion base pairs.

Answer 29

Chromosome 11

Question 30

This is a medium submetacentric chromosome with 132 base pairs.

Answer 30

Chromosome 12

Question 31

These are chromosomes 13 to 15 that are medium sized and are acrocentric with satellites.

Answer 31

Group D

Question 32

This a medium acrocentric chromosome with a stalk that has 113 million base pairs.

Answer 32

Chromosome 13

Question 33

This is a medium acrocentric chromosome with a stalk that has a 105 million base pairs.

Answer 33

Chromosome 14

Question 34

This is a medium acrocentric chromosome with a stalk that has 100 million base pairs.

Answer 34

Chromosome 15

Question 35

These are chromosomes 16 to 18 that are small. 16 is metacentric and 17 and 18 are submetacentric.

Answer 35

Group E

Question 36

This is a small metacentric chromosome that has 90 million base pairs.

Answer 36

Chromosome 16

Question 37

This is a small submetacentric chromosome that has 81 million base pairs.

Answer 37

Chromosome 17

Question 38

This is a small submetacentric chomosome with 76 million base pairs.

Answer 38

Chromosome 18

Question 39

These are chromosomes 19 and 20 that are small and metacentric.

Answer 39

Group F

Question 40

This is a small metacentric chromosome with 63 million base pairs.

Answer 40

Chromosome 19

Question 41

This is a small metacentric chromosome with 59 million base pairs.

Answer 41

Chromosome 20

Question 42

These are the chromosomes 21,22, and Y that are small, acrocentric, and 21 and 22 are with satellites.

Answer 42

Group G

Question 43

This is a small acrocentric chromosome with 50 base pairs and is the largest among the G group.

Answer 43

Y chromosome

Question 44

This a small acrocentric chromosome with a stalk and has 49 million base pairs.

Answer 44

Chromosome 22

Question 45

This is the smallest acrocentric chromosome with a stalk and has 46 million base pairs.

Answer 45

Chromosome 21