-Not completely understood, share echinoderm and chordate characteristics
-Chordates/them have pharnygeal slits
-Ambulacraria hypothesis unites echinoderms and hemichordates on the basis of a shared diffuse epidermal nervous system
-Shared tripartite coelom in hemichordates/echinoderms
-Buccal diverticulum now believed to be a synapomorphy of hemichordates only
-Early embryogenesis of hemichordates similar to echinoderms
-Tornaria larva almost identical to bipinnaria larva, suggesting that hemichordates/echinoderms are sister groups
<span>-Sequence analysis of the gene encoding the small subunit of rRNA supports a deuterostome clade</span>
1. Ask a question: He thought how traits passed from one generation to another.
2. Form a hypothesis: His hypothesis was "Each plat has two factors for a trait, one from each parent.
3. Test hypothesis: He grew pea plants to see what will happen.
4. Make and record observations: He discovered that one factor alone doesn't determine the expression of the trait in the pea plant.
<span>5. Conclusion: Traits in pea plants are inherited from the parent pea plants.</span>
Answer:
Conduction, simply put, is the transfer of heat through matter. ... Hot air rises, but heat flows from hot to cold, regardless of direction. Heat will continue to flow through matter, from hot to cold, until there is no longer a difference in temperature between hot and cold, a condition known as thermal equilibrium
Explanation:
Answer:
B. DNA unzips before step 1.
Explanation:
This question is describing the process of gene expression, which is made up of two major stages namely; transcription and translation. Transcription is the process by which mRNA is synthesized from a DNA template while translation is the process where protein (amino acid sequence) is produced using the mRNA transcript.
This stages of gene expression has been summarized in the steps listed by Shura. However, prior to the formation of an mRNA molecule in step 1, the double stranded DNA has to unwind i.e. separate into single strands as initiated by the enzyme RNA polymerase. Therefore, the list should read as follows:
- DNA unzips
- A strand of RNA is made.
- RNA leaves the nucleus.
- RNA moves to the ribosome.
- A protein is made.