If the shape of radish is under the control of one gene, for example A than we can say:
AA is dominant homozygous genotype-round radish phenotype,
aa is recessive homozygous genotype-long radish phenotype
If we cross round and long radish:
P: AA x aa
F1: Aa Aa Aa Aa
Aa is heterozygous genotype-oval phenotype
If we than cross the F1:
Aa x Aa
F2: AA Aa Aa aa
This means that the ratio between the phenotypes woul be 1:2:1 (round:oval:long).
Answer:
E. All choices are accurate representations of DNA.
Explanation:
DNA consists of a shape like a common known 'Double Helix' which is possible because it is made up of building blocks (chemical) known to us as nucleotides. Nucleotides are made up of monomers such as
- phosphate group
- a sugar group
- One of four types of nitrogen bases (Four types of nitrogen bases...adenine, guanine, cytosine, or thymine)
DNA is a polymer which is, yes, made up of the monomers 'nucleotides'
That <u>all cells contain nuclei </u>is NOT a component of the cell theory
Explanation:
Not all cells contain a nuclei. Cells are even categorized based on this attribute. Eukaryotic cells have a nucleus while prokaryotic cells do not. This property, therefore, cannot be used to categorize all cells. Prokaryotic cells have a nucleoid, which is not a true nucleus, but only a region in the cell where the genetic material of the cell can be found.
The other 3 choices are the universally-accepted tenets of the cell theory;
-cells are the basic unit of organization in organisms
-all living things are made of cells
-all cells come from pre-existing cells
Learn More:
For more on cell theory check out;
brainly.com/question/6911084
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