A) autotriploid B) autotetraploid C) allotetraploid D) autopentaploid E) allopen

Question

A) autotriploid B) autotetraploid C) allotetraploid D) autopentaploid E) allopentaploid
I omitted allotriploid because it was incorrect. Please explain, thank you!



Einkorn wheat (Triticum uratu) Wild grass Aegilops speltoides or related species) Genome AA (2n = 14) Genome BB (2n 14) Gametes F1 generation Hybrid Genome A B (2n 14) nondisjunction Emmer wheat (Triticum turgidum) Wild grass Aegilops tauschii) Genome AA BB (An 28) Genome DD (2n- 14) F2 generation |||Hybrid Genome ABD (3n 21) Bread wheat (Triticum aestivum) Genome AA BB DD (6n 42) Figure 8.29 Genetics: A Conceptual Approach, Fifth Edition © 2014 W. H. Freeman and Company

Explanation / Answer

The parent bread wheat genome is AA,with chromosome number 2n=14,It produces haploid A gamete with chromosome number n=7.

The genome for Emmer wheat is AABB,with chromosome number 4n=28,it produces two types of haploid gametes A & B with chromosome number 7 each.

When these two are crossed Bread wheat and Emmer wheat it produces AUTOTRIPLOID with chromosome number 3n=21 and with genome AAB.

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