Explanation:
The cellular communication is an important aspect of unicellular and multicellular organisms in the environment. The cellular communication may differ in the bacteria, plants and animals but the mechanism of cellular communication remains the same.
The mechanism involves the receptors, change in the structure of receptors which triggers the signal to respond and then the response of the cell. Therefore the evolutionary biologists must look at this mechanism and the molecules associated with this mechanism.
The biologist can look at these receptors and the ligands which initiate the transduction process in the organisms.
Answer:
The osmolarity of mammalian urine may vary over time. The osmolarity of mammalian urine varies little between species. Mammalian urine is always hyperosmotic to blood. The osmolarity of mammalian urine may vary over time.
Explanation:
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Answer: C. It was heterozygous for both genes.
Explanation: To produce a generation that has individuals with trait for colored aleurone in the kernels, the plant being analised has to have a dominant allele R. In the same way, to have offspring with the recessive trait, it has to carry the recessive allele r. So, the unknown plant has to be heterozygous for colored aleurone in the kernels, Rr.
The same thought can be applied to plant color: Since there are green and yellow plants, the unknown plant has to be heterozygous for that trait, Yy.
In conclusion, the unknown plant is heterozygous for both genes.
The DNA sequences that make up the genetic code of an organism determine which traits the organism will exhibit. How are the instructions coded by DNA translated into an organism's physical traits? Instructions coded by DNA sequences are translated into proteins<span> which express an organism's physical traits.</span>
Answer:
Explanation:
Deciduous and Coniferous trees are both Woody plants and can both be found in the forest, but there are significant differences between them including-
1) The leaves of deciduous trees change color and are shed seasonally while the needles of Coniferous trees are not lost seasonally, neither do they turn pale
2) Deciduous trees are flowering plants and so they bear their seeds in fruits while Coniferous trees are gymnosperms and so bear their seeds in cones.
3) Coniferous trees possess needles in lieu of leaves while deciduous trees possess broad leaves
4) Examples of Coniferous trees are firs, junipers, redwoods, spruces, and pines etc. while examples of deciduous trees are oak, maple, and elm etc.
