Quick question multiple choice question help please? 1. A gene with the address
ID: 208733 • Letter: Q
Question
Quick question multiple choice question help please?
1.
A gene with the address 7p12.1 is found on chromosome number:
7
3
1
2
12
Impossible to tell from this information
2.
The production of gene families, such as the globin genes, is the result of
simple translocations
gene duplications
deficiencies
inversions
3.
Autopolyploids:
Have multiple chromosome sets
Are hybrids between two different species
All of the other choices are correct.
Can only be produced in the laboratory
4.
Aneuploidy involving the X chromosome in humans is generally lethal.
True
False
5.
Which of the following would have the shortest p arm of the chromosome?
All of the other choices are correct
Submetacentric
Metacentric
Acrocentic
Telocentric
A.7
B.3
C.1
D.2
E.12
F.Impossible to tell from this information
Explanation / Answer
1.
The gene addressed 7p12.1 is located on chromosome number 7 and abnormalities in chromosome 7 may lead to various types of carcinomas like pancreas cancer. Option A is correct.
2.
Globin genes encode globin proteins that contain heme. These proteins include hemoglobina nd myoglobin and these proteins are involved in binding and transport of oxygen. the globin genes belong to super family of genes that are mainly produced by gene duplications. Option 2 is correct.
3.
Autopolyploids are orgnisms containing multiple sets of chromosomes in somatic cells or autosomes. Thus autopolyploidy is called somatic polyploidy or endopolyploidy. The autopolyploids are resulted due to multiplication of chromosome sets. Autopolyploiody is mostly observed in plants and occurd during cell divison. option 1 is correct.
4.
Aneuploidy is a condition of abnormal chromosome number represented as either 2n-1 condition or 2n+1 condition. Normal chromosome numbers in humans is 46. The chromosome number of 45 or 47 is called aneuploidy. In humans aneuploidy mostly resulkts in the form of 2n=1 condition with 47 chromosomes or one extra copy of chromosome and this condition is mostly lethal. The given statement is true.
5.
A telocentric chromosome contains centromere at terminal position and due to this chromosme contains shortest p arm. The chromosome exists in letter 'i' shape and humans usually do not contain telcentric chromosomes. Option 5 is correct.
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