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Genetics: Extra-nuclear Inheritance in Eukaryotic Cells

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Genetics: Extra-nuclear Inheritance in Eukaryotic Cells

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Questions and Answers

What is a characteristic feature of the cytoplasmic genome in eukaryotes?

Linear DNA molecules

Multiple copies of genome (correct)

Only two copies of each gene

Large DNA molecules

Which organism exhibits extra-nuclear inheritance through male sterility involving cytoplasmic and nuclear genes?

Maize (correct)

Mirabilis jalapa

Haploid algae

Chlamydomonas

In extra-nuclear inheritance, maternal effects of nuclear genes may lead to:

Uniform progeny

Disguised true genotype

Altered Mendelian ratios (correct)

Permanent maternal transmission

What is the type of offspring determined by in the 4 o'clock plant?

Branch color Signup and view all the answers

Which feature is not true about nuclear-cytoplasmic gene interaction in hybrid maize?

Permanent maternal transmission Signup and view all the answers

What does the S form and F form represent in the context of male sterility in maize?

Cytoplasmic genes Signup and view all the answers

Where are extra-nuclear genes found in eukaryotic cells?

On small circles of DNA in mitochondria and chloroplasts Signup and view all the answers

Which organelles reproduce themselves?

Mitochondria and chloroplasts Signup and view all the answers

What type of inheritance is displayed by cytoplasmic genes in eukaryotic cells?

Extra-nuclear uniparental inheritance Signup and view all the answers

How do male gametes contribute to the transmission of organellar genes?

By providing cytoplasm to offspring Signup and view all the answers

Which organelles support the endosymbiotic theory?

Mitochondria and chloroplasts Signup and view all the answers

What is the main source of variation in organelle genes among offspring?

Mutation Signup and view all the answers