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Genetic Nature of Apomictic Embryos and Hybrid Varieties in Crops

Explore the genetic characteristics of apomictic embryos and hybrid varieties in crops, and learn about the implications for maintaining hybrid traits. Discover how the cultivation of hybrids has revolutionized productivity in food and vegetable crops, but also presents challenges in seed production and maintenance of desirable traits.

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Questions and Answers

What is the term used to describe the production of seeds without fertilization in plants?

Apomixis

Which of the following is a characteristic of apomictic seeds?

They have reduced genetic diversity

What is polyembryony?

The development of more than one embryo in a single seed

Which type of plant species can develop seeds without reduction division and fertilization?

<p>Asteraceae plants</p> Signup and view all the answers

In the context of plant reproduction, what does apomixis mimic?

<p>Fertilization</p> Signup and view all the answers

How do some Citrus and Mango varieties display polyembryony?

<p>By having nucellar cells divide and form multiple embryos in each ovule</p> Signup and view all the answers

What is the term for the development of embryos from nucellar cells surrounding the embryo sac in plants?

<p>Polyembryony</p> Signup and view all the answers

Which feature distinguishes apomictic seeds from typical seeds?

<p>&quot;Seeds produced without fertilization&quot;</p> Signup and view all the answers

"Polyembryony" refers to what characteristic in plants?

<p>&quot;Multiple embryos in one seed&quot;</p> Signup and view all the answers

"Apomixis" in flowering plants is most similar to which process?

<p>&quot;Cloning&quot;</p> Signup and view all the answers

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