Answer:
the 3rd option rr
Explanation:
if the seeds show a recessive trait, then it can only be when all alleles are recessive (in this case its rr).
Answer:
C. Uranus, Neptune, and Pluto
:)
The feature of endocrine system that makes it distinctly different from the nervous system is that it uses hormones distributed through the bloodstream, option(A).
<h3>Why is endocrine system distinctly different from nervous system?</h3>
- The biggest difference between these two is that the endocrine system uses hormones produced by glands into the bloodstream, whereas the nervous system uses electrical impulses to send signals through neurons.
- The signal transmission of the nervous system is fast because neurons are interconnected, but the functions are short-lived when compared to endocrine system.
Therefore, option(A) is the correct answer.
To know about differences between the two systems, refer:
brainly.com/question/26146622
#SPJ2
Answer:
1) They have a notocorda that serves as support through the back of the fish.
2) Gill bags. These organs are responsible for filtering the oxygen in the water.
3) A pineal eye that is sensitive to light.
4) A cartilaginous skeleton.
Explanation:
Answer:
Prokaryotes do not have introns, eukaryotes have introns
Explanation:
Prokaryotes do not have introns, eukaryotes do. Introns are regions of DNA that are transcribed but not part of the final protein. They interrupt exons, which are the coding parts of the gene. These are only present in eukaryotes.
Introns need to be removed before the mRNA can be translated into the protein sequence. This occurs by a process called splicing. The splicing machinery binds the junction between introns and exons and excises the intron. The exons are then fused together to create the mRNA.
Other processing steps occur to the eukaryotic pre mRNA to prevent it from being degraded in the cell. This includes adding a cap to the 5' end of the protein, and adding a poly A tail to the 3' end. One these steps are complete, the eukaryotic mRNA is complete.
The prokaryotic mRNA undergoes transcription and translation simultaneously because it doesn't require these processing steps.
