Answer:
Plants are classified based on these 3 characteristics:
The evergreen plants are plants that retain leaves at all times (all year round).
Woody plants can also be grouped as deciduous or evergreen.
Deciduous plants are seasonal plants which shed its leaves at the end of the growing season, either during the winter season in the temperate climate or during the dry season .
All redox chemistry of the pyridine nucleotide coenzymes takes place at the 4-position of the pyridine ring.
<h3>What are pyridine nucleotide coenzymes?</h3>
The pyridine nucleotide coenzymes are specific coenzymes responsible for oxide reduction reactions during cellular respiration.
The pyridine nucleotide coenzymes include nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP) and they function by accepting/donating electrons during chemical reactions of the cellular respiration.
In conclusion, all redox chemistry of the pyridine nucleotide coenzymes takes place at the 4-position of the pyridine ring.
Learn more about Nicotinamide adenine dinucleotide here:
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Answer:
2% of the progeny will be double crossovers for the trihybrid test cross
Explanation:
By knowing the positions of genes, we can estimate the distances in MU between them per region.
- Genes A and B are 10 map units apart (Region I)
- Genes B and C are 20 map units apart (Region II)
- Genes A and C are 30 map units apart
----A-------10MU--------B-------------20MU-------------C---
Region I Region II
We can estimate the recombination frequencies by dividing each distance by 100.
• recombination frequency of A-B region = 10MU / 100 = 0.10
• recombination frequency of B-C region = 20MU / 100 = 0.20
Now that we know the recombination frequencies in each region, we can calculate the expected double recombinant frequency, EDRF, like this:
EDRF = recombination frequency in region I x recombination frequency in region II.
EDRF = 0.10 x 0.20 = 0.02
2% of the progeny will be double crossovers for the trihybrid test cross