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Genetics
What is genetic code? Enlist the characteristics of a genetic code
Genetics
Is induction and derepression the same thing?
In lac operon when Allolactose molecule is present in the medium (in the bacterial cell) it binds to the monomer of repressor and reduces the binding affinity of repressor to the operator site and the RNA polymerase is free to synthesis a polycistronic mRNA. Thus the allolactose molecule turns on the expression of lac operon by removing repression.
So I conclude that in lac operon induction is same as derepression. But does it hold true for all operons or there are operons in which induction is achieved without repressing the repressor?
In lac operon when Allolactose molecule is present in the medium (in the bacterial cell) it binds to the monomer of repressor and reduces the binding affinity of repressor to the operator site and the RNA polymerase is free to synthesis a polycistronic mRNA. Thus the allolactose molecule turns on the expression of lac operon by removing repression.
So I conclude that in lac operon induction is same as derepression. But does it hold true for all operons or there are operons in which induction is achieved without repressing the repressor?
Genetics
mRNA direct the building of proteins through a sequence of? A) exons. B)introns. C)codons. D)anticodons expain both correct nad false answer with reason
Genetics
Here's a link and my question relates to the diagram present in the link: http://biology.stackexchange.com/questions/48923/crossing-over-holliday-model
Why is the heteroduplex with constant terminal genes called a non-crossover despite exchange of middle DNA segments?
Why is the heteroduplex with constant terminal genes called a non-crossover despite exchange of middle DNA segments?
Genetics
Who is father of experimental genetics? Is it T.H.Morgan?
Genetics
Which of following is/are exception(s) of independent assortment ? Why?
1.Duplicate dominant epistasis
2.Complementary gene action/ Duplicate recessive epistasis
3.Linkage
1.Duplicate dominant epistasis
2.Complementary gene action/ Duplicate recessive epistasis
3.Linkage
Genetics
Which of following is/are exception(s) of Law of segregation ? Why?
1. Parental imprinting
2 Random inactivation
3.Maternal effect
4.Incomplete penetrance
5.Nondysjunction
6. Meiotic drive
7.Lethal alleles
Note: You may just explain in a word or two for I understand these phenomena.
1. Parental imprinting
2 Random inactivation
3.Maternal effect
4.Incomplete penetrance
5.Nondysjunction
6. Meiotic drive
7.Lethal alleles
Note: You may just explain in a word or two for I understand these phenomena.
Genetics
Is father of modern genetics T.H.Morgan?
There are several opinions on this topic mostly the internet shows that its Mendel. But according to my knowledge it should be Morgan. Who's the father of modern genetics?
There are several opinions on this topic mostly the internet shows that its Mendel. But according to my knowledge it should be Morgan. Who's the father of modern genetics?
Genetics
When the dihybrid test cross ratio comes out to be 1:1:1:1 it means that the genes are not linked and they assort independently. But from there could we say that the genes are not present on same chromosomes?
I'm thinking this because the genes present on a chromosome form a linkage group that means they are linked.So could we say that the genes involved are not present on the same chromosomes but on different chromosomes?
I'm thinking this because the genes present on a chromosome form a linkage group that means they are linked.So could we say that the genes involved are not present on the same chromosomes but on different chromosomes?
Genetics
What is the difference between pi RNA and mi RNA?
(It has something to do with single stranded state and double stranded state, isn't it?)
(It has something to do with single stranded state and double stranded state, isn't it?)
