The right answer is A.
The non-meiotic disjunction is an absence of separation of two members of a pair of homologous chromosomes or chromatids of a chromosome during meiosis or mitosis, it follows that one of the daughter cells presents two copies of the same chromosome or chromatids (n + 1) and the other daughter cell receives none (n-1).
Answer:
Scanning electro microscopy
Explanation:
"A scanning electron microscope (SEM) scans a focused electron beam over a surface to create an image. The electrons in the beam interact with the sample, producing various signals that can be used to obtain information about the surface topography and composition"
Reference: Nanoscience Instruments. “Scanning Electron Microscopy.” Nanoscience Instruments, 2019
A beaker containing a certain substance has heat applied to it. The particles that make up the substance begin to move farther apart from each other. The change of state that could be occurring in the beaker is the substance is changing from a liquid to a gas.
Answer:
There are several hypotheses as to why Earth's climate changed: an ice age and a meteor collision are two. Regardless of why the climate changed, dinosaurs could not adapt to a new environment to avoid extinction. Mammals did not become a dominant species on Earth until the extinction of dinosaurs.
Answer:
The correct answer is A, as the statement is true. The enzyme catchol-o-methyl transferase (COMT) in the nervous system is important in the degradation of catecholamines by neuroglia cells.
Explanation:
Catechol-O-methyltransferase, abbreviated as COMT, is one of several enzymes in the body involved in the degradation of catecholamines such as dopamine, norepinephrine and adrenaline. The enzyme works by transferring a methyl group to the signal substance from the SAM donor group (S-adenosylmethionine).
