Answer:
D. Pollution of the atmosphere
Explanation:
All the other answers would seem to only affect the designated local area. However, option D would affect both the local and global economy.
Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA<span> (tRNA) molecules carry amino acids to the ribosomes during protein synthesis.</span>
Answer:
1. A plant of genotype
is testcrossed to
If the two loci are 10 m.u. apart, what proportion of progeny will be A B/a b?
45 percent of the progeny will be A B/a b
2. The A locus and the D locus are so tightly linked that no recombination is ever observed between them. If A d/A d is crossed to a D/a D, and the F1 is intercrossed, what phenotypes will be seen in the F2 and in what proportions?
P A d/A d × a D/a D
F1 A d/a D
F2 1 A d/A d
2 A d/a D
1 a D/a D
3. The R and S loci are 35 m.u. apart. If a plant of genotype
is selfed, what progeny phenotypes will be seen and in what proportions?
4. The cross E/E · F/F × e/e · f/f is made, and the F1 is then backcrossed to the recessive parent. The progeny genotypes are inferred from the phenotypes. The progeny genotypes, written as the gametic contributions of the heterozygous parent, are in the following proportions:
Explain these results.
The two genes are 33.3 map units (m.u.) apart.
5. A strain of Neurospora with the genotype H · I is crossed with a strain with the genotype h · i. Half the progeny are H · I, and half are h · i. Explain how this is possible.
Because only parental types were recovered, the two genes must be quite close to each other, making recombination quite rare.
Explanation:
Answer:
There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.
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