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3 years ago

What is believed to be the main reason for the poor cloning efficiency of the nuclear implantation method?

Biology

1 answer:

Gemiola [76]3 years ago

6 0

Answer: The options are not given, here are the options.

A) the lack of an effective method to induce division of the product of the somatic cell fusion product

B) the difficulty in extracting nuclei from somatic cells

C) the lack of an efficient method for injecting the somatic cell nucleus into the egg cell

D) variations in the completeness of epigenetic programming of the somatic cell nucleus

The correct option is

D) variations in the completeness of epigenetic programming of the somatic cell nucleus

Explanation:

Nuclear transplantation method is the method in which the nucleus from a donor cell is removed and inserted in the target cell in which also it's nucleus has been removed or enucleated. The nuclear transplantations has slowed

embryologists to interfere the development of an organism and to study nucleus to direct development. It has been used for the cloning of several species.

Nuclear transplantation has failed in cloning because variations in the completeness of epigenetic programming of the somatic cell nucleus.

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3 years ago

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natita [175]

Answer:

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Explanation:

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3 years ago

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Volgvan

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4 years ago

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There is an enzyme that catalyzes the production of the pigment responsible for dark fur color in siamese cats and himalayan rab

MariettaO [177]

Answer:

Light brown colour will be appear.

Explanation:

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6 0

3 years ago

Which types of mutations in the lac operon stop Escherichia coli from utilizing lactose as a carbon source? a) promoter deletion

Sladkaya [172]

Answer:

D.) repressor DNA-binding site mutation

Explanation:

lacl prevents the repressor polypeptide is a mutant that prevent operon from binding lactose, and thus will bind to the operator and be non-inducible.. This mutant will represses the lac operon whether lactose is present or not and the lac operon will not be expressed. It is also called“super-supperesor".

The lacI locus – One type of mutant allele of lacI (callled I-) prevents the production of a repressor polypeptide or produces a polypeptide that will not allow to bind to the operator sequence.

This is also a constitutive expresser of the lac operon because absence of repressor binding permits transcription.

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3 years ago