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Helen [10]
3 years ago
6

What are early warning signs that a romantic relationship might become violent? check all that apply?

Biology
1 answer:
Elden [556K]3 years ago
7 0
What are your options because i have a lot that apply
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Wild diploid wheat has seven chromosomes in its pollen. Discuss the major events that had to occur for tetraploid pasta wheat to
lianna [129]

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.

5 0
3 years ago
Comparison of the excretory system of a rat, frog and human
yaroslaw [1]
In general, the function of the excretory system is,  removal of nitrogen waste products from the bloodstream and transport out of the body through urine. It maintains the balance of fluids and electrolytes, control of red blood cells, regulation of blood pressure and also the formation of red bone marrow.
In humans, the excretory system is responsible for removing waste from the body. Metabolic waste is being removed from the blood and an appropriate amount of water nutrients and water and salt are being retained.
In frogs, the excretory system consists of a pair of ureters, kidney pairs, cloaca, and urinary bladder. Frogs take in liquid waste from kidney which removes wastes and then the extra water becomes urine which then it is collected in the urinary bladder through ureters.
The urinary bladder is present in ventral to return then both open into the cloaca.
3 0
3 years ago
1. How many trials did it take for half of the Virtualium atoms to decay?
Elis [28]

Answer:

Carbon-14 has a half-life of 5,730 years. Taking one atom of 14C, this will either have decayed after 5,730 years, or it will not. But if this experiment is repeated again and again, it will be seen that the atom decays within the half life 50% of the time.

Explanation:

6 0
3 years ago
The continuous removal and replacement of organic molecules in a cell are part of the process of
Alenkinab [10]
Metabolic turnover........
5 0
3 years ago
Read 2 more answers
The Center for Disease Control publishes articles explaining the causes of seasonal West Nile virus. Research proves mosquitoes
nata0808 [166]

Answer:

1. D

2. B

Explanation:

1.They inject the virus when sucking out the blood.

2. Bear/Mouse because bears don't seek out and eat mice.

4 0
3 years ago
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