Answer:
Explanation:
Lets Tan seed be TT
Red seed be tt
A cross between TT ×tt will produce 4 Tt
TT× tt
!
F1 Tt Tt Tt Tt
a. Tan seed is dominant with an allele TT. It effect dominate that of red seed indicating it is a dominant traits while red seed is a recessive traits.
A dominant trait is a traits that is expressed in the phenotype of an organism the F1 generation are all Tan seeds this shows that the trait is dominant.
The genotype of the F1 melon is Tt in a dominant form
The F2 result follows the mendelian principle where segregation occur leading to a phenotypic ratio of 3:1
72Tan seeds:24red seeds
Where the 72 tan seed has the highest ratio and 24 red seeds has the smaller ratio.
Tt ×Tt
!
F2 TT Tt Tt tt
Phenotypic ratio 3:1
The substance that is coded for by a length of DNA is base. The correct option is A.
<h3>What is a base?</h3>
Nucleobases, also known as nitrogenous bases or simply bases, are nitrogen-containing biological compounds that form nucleosides, which are then components of nucleotides, all of which are the basic building blocks of nucleic acids.
The complete question is attached.
The substance that is coded for by a length of DNA is base.
Thus, the correct option is A.
For more details regarding nitrogenous bases, visit:
brainly.com/question/14090794
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