d. They are based on current knowledge
Explanation:
The major limitation of the existing model of our solar system today is that they are based solely on our current knowledge.
If new additional findings are discovered, they can alter the model of the solar system as we have always known it.
- The solar system is made up of the planets, the stars, satellites and other planetary bodies.
- During the middle ages, scientists thought that the earth was at the center of the universe.
- The school of thought at time was a geocentric model of the universe.
- When new evidence and body of knowledge opened up the the way of Copernicus, this model of the solar system became invalidated.
- The sun was now placed at the center of the solar system favoring a helicentric model.
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Answer:
The protein likely travels through a common lumen shared by thylakoid membranes and grana, and cannot easily diffuse through the thylakoid membrane.
Explanation:
There is a lot of scientific research in which a specific molecule can be labeled with some fluorescent marker (usually carbon 14). This type of marking allows the researcher to make observations about the movement of these molecules, as you can see in the question above. About the research shown in the question, the researcher realized that the protein labeled with the fluorescent marker moved between the grana and was always in the lumen, so she can conclude that the selocomovement protein moved through the lumen that is shared between the tilacoid membranes and the grana.
Answer:
TT (female parent)= All gametes with "T" allele
tt (male parent)= All gametes with "t" allele
Explanation:
Let's assume that the allele "T" is responsible for the tallness and the allele "t" makes the plants dwarf.
Since the progeny of the test cross was tall only, this means that only the dominant trait was expressed. When a test cross progeny expresses only the dominant trait, the dominant parent is homozygous dominant for the gene. Since all the recessive alleles came from the pollen, the dominant parent imparted the "T" allele to the progeny. The genotype of the female parent was "TT" and that of the male parent was "tt".
