<u>Answer:</u>
<em>If Mendel crossed a true breeding dominant plant with a true breeding recessive plant the recessive trait is visible in the F3 generation.
</em>
<u>Explanation:</u>
In <em>Mendel’s cross the selected parents are a tall pea plant and a short pea plant.</em> Tall is the dominant trait and short is the recessive trait. Both the parents are homozygous.
Letter T represents tall and t represents short. Hence the phenotype TT is homozygous dominant and tt is homozygous recessive.
<em>The genotype Tt represents tall since T is dominant over t. Mendel’s cross can be represented as </em>
<em>
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<em>
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<em>F1 generation Tt Tt Tt Tt
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<em>F2 generation TT Tt Tt tt
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A gene directs the synthesis of a protein<span> by a two-step process. First, the instructions in the </span>gene<span> in the DNA are copied into a messenger RNA (mRNA) molecule. The sequence of nucleotides in the </span>gene<span> determines the sequence of nucleotides in the mRNA. This step is called transcription.</span>
Answer:
Here is the complete question
The initiation of transcription requires melting of the DNA double helix, i.e. separating hydrogen-bonded base pairs, immediately upstream of the +1 site. In E. coli this melting is accomplished by ___________.
-DNA helicase unwinding the double helix around the +1 site.
-DnaA:ATP complexes binding to and twisting the double helix at the +1 site.
-RNA polymerase obtaining the energy to cause separation of strands from ATP hydrolysis.
-binding of the DNA complexes to the double helix at the +1 site and twisting of the double helix.
-bases at the promoter region flipping outward from the double helix into pockets on the polymerase.
And the answer is.....
bases at the promoter region flipping outward from the double helix into pockets on the polymerase.
Answer:
The correct answer is - health hazards (carcinogenic).
Explanation:
Processed foods, cured meat, and certain types of wines have a chemical present in them for increasing the life of the food and taste. This chemical is used in this food are known for their cancer-causing properties and grouped as group 1 carcinogen which comes under health hazard of type of chemical hazard.
N-nitroso-compounds (NOC) and polycyclic aromatic hydrocarbons (PAH) are the two major chemicals used in cured meat and processed food. There are many other severe health conditions also caused by ingesting a high amount of such food like diabetes, cardiovascular disease, and obesity.
The kingdoms are Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia.
