Answer:
Tetraploid wheat evolved by allopolyploidization and subsequent diploid-like behavior due to cytological diploidization
Explanation:
Durum wheat (<em>Triticum durum</em>) or pasta wheat, is a tetraploid wheat species that has 28 chromosomes, i.e., seven pairs in each genome (2n = 4x = 28). Durum wheat was domesticated from wild emmer wheat, which originated by hybridization of two diploid wheat species with 14 chromosomes: <em>Triticum monococcum</em> (genome AA) and one wild progenitor (genome BB). <em>Triticum durum </em>is a typical example of evolution by hybridization and polyploidization, where the resultant tetraploid species has two complete sets of chromosomes. Allopolyploidization is one of the most common types of plant speciation. During meiosis, 28 chromosomes form 14 homologous chromosome pairs, because homologous chromosomes have developed 'restriction of pairing' (i.e., cytological diploidization). The restriction of pairing to fully homologous chromosomes ensures a correct meiotic behavior, which otherwise would be altered due to the high level of homology that still exists among chromosomes from different wheat progenitors.
Semi-conservative DNA replication means that one stand is new DNA and the other contains a newly synthesized strand.
A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment.
Answer:
The third one, The opening of the cup is so much bigger than the bottom even though the cup moves they will both be stacked together. (I think)
Explanation:
<span>1. Cytoplasm. Cytoplasm is where its organelles are suspended.</span>
<span>2. Ribosomes. These ribosomes facilitate in manufacturing the cell’s proteins used in many cellular activities.</span>
<span><span>3. </span>Plasmid. It is a tiny DNA molecule.</span>
<span>4. Nucleoid. The genophore of a prokaryotic cell where its genetical material are found.</span>
Prokaryotic cells have: <span><span>1. </span>Capsules.</span>
<span><span>2. </span>Flagellum. A tail</span>
<span><span>3. </span>Pili, a hair-like structure on its surface.</span>
