Answer:
The anterior pituitary gland is controlled by regulatory hormones secreted by the <u>neurosecretory cells present in the hypothalamus.</u>
Answer:
1. Weaker
2. Continuous
Explanation:
A tumor suppressor gene codes for retinoblastoma protein (pRb). The retinoblastoma protein binds to transcription factor E2F when DNA damage is detected. The E2F bound to pRb can not stimulate expression of genes that code for proteins required during the process of DNA synthesis. The cell can not enter the S phase.
On the other hand, when the retinoblastoma protein is phosphorylated by cyclin E-CDK2, E2F transcription factor is free to stimulate the expression of genes required for DNA synthesis and the cell proceeds from G1 to S phase.
When the mutated retinoblastoma gene code for a protein that serves as phosphorylated protein, it will not be able to bind strongly with E2F and there would be continuous expression of genes required for S phase.
<u>The closest relation in a </u><u>phylogeny tree </u><u>is found between </u><u>Annelida</u><u> and </u><u>Arthropoda</u><u>.</u>
What is a phylogenetic tree simple definition?
A phylogenetic tree, also called a phylogeny, is a diagram that shows the evolutionary branches from which various species, creatures, or genes have descended from one another.
What is a phylogenetic tree how is it used?
- A phylogenetic tree is a tool used by scientists to depict the connections and evolutionary paths among organisms.
- A phylogenetic tree is a type of diagram that shows the evolutionary links between different kinds of living things.
Types of Phylogenetic Trees -
- Rooted tree. Make the inference about the most common ancestor of the leaves or branches of the tree.
- Un-rooted tree. Make an illustration about the leaves or branches and do not make any assumption regarding the most common ancestor.
- Bifurcating tree.
- The multifurcating tree.
Learn more about phylogenetic tree
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The field which is used to classify organisms is taxonomy. Under the
umbrella of taxonomy there are a lot of different branches, such as
alpha taxonomy - the description and classification of new species, and
numerical taxonomy, a method that uses numeric algorithms to classify
species.
Answer:
Eosinophil.
Explanation:
The human blood consists of the plasma, red blood cells, white blood cells and the platelets. The white blood cell of the body helps in providing protection from the body and fights with he pathogens.
The granulocytes of the white blood cells include eosinophils, basophils and neutrophils. The eosinophils are the first cells that reach at the injury might occur due to the worms and nematyhelminthes. They have bilobed nucleus and stain orange with the basic dyes.
Thus, the answer is eosinophil.