Answer:
25 and 21
Explanation:
if a homologous pair does not separate, then the homologous pair (when the spindle fibers are dragging it over to the other pole), then that chromosomes DNA will be the exact same as the paternal and maternals' DNA. During Meiosis I, there is the stage where the homologous pairs are lined up and pulled apart (where an exchange tends to happen), but if there pair doesn't mix, then the exact same DNA is duplicated, and thus, the same traits can be found in the daughter cell. If you are talking about an entire homologous pair being pulled over to one side of the nucleus, depriving the other side of a chromosomal pair, the daughter cells would then have 21 chromosomes, and the other one would have 25 chromosomes. The gametes, similarly, would have 21 chromosomes and 25 chromosomes.
Bicarbonate ion is important organic molecule in the buffering system of blood.
Answer:
Symbiosis is where no organism is killed in the relationship.
Parasitism: The host is harmed but not killed.
Mutualism: Both organisms are benefitted
Commensalism: One organism is benefitted, the other is not effected
In predation, the prey is killed and eaten by the predator for energy.
Sometimes you may see that they consider predation a symbiotic relationship, but not always.
Answer:
crown, neck.
Explanation:
A tooth has an exposed <em><u>crown</u></em>, a constricted <em><u>neck</u></em>, and one or more roots that anchor it to the jaw.
DNA is a double helix composed of nitrogenous bases, which form hydrogen bonds with each other. It also contains a deoxyribose sugar and phosphate backbone.
