Answer:
una alimentación saludable y la práctica de ejercicios físicos contribuyen al normal funcionamiento de la tiroides y mejoran el estado de ánimo
Explanation:
La tiroides es una glándula cuya función es secretar hormonas tiroideas tales como tiroxina y triyodetironina, las cuales están implicadas en el crecimiento y el control del metabolismo. Es bien conocido que problemas de salud tales como hipotiroidismo (hormonas tiroideas a concentraciones muy bajas) o hipertiroidismo (hormonas tiroideas a concentraciones excesivamente altas) afectan el estado de ánimo, y llevan a cuadros de estrés emocional como ansiedad y depresión. Una alimentación balanceada basada en alimentos ricos en yodo (pescados del mar, huevos, camarones) y zinc (maní, carne, semillas de calabaza, almendras), como así también el ejercicio físico regular, pueden producir el restablecimiento de los niveles normales de tiroxina y triyodotironina en personas con hipotiroidismo, lo cual ha sido asociado con una mejora inmediata en el estado de ánimo.
1. False
Speciation is the formation of new species from a population of species. This process has three main stages: isolation, where the population is separated; adaptation, where the isolated population adapts to the new environment; and reproductive isolation, where the two populations can no longer breed to produce fertile offspring.
2. Behavioral isolation
This occurs when there is a difference in mating rituals or other behaviors which prevent interbreeding.
Answer:
Definition:
Biological evolution is the process through which the characteristics of organisms change over successive generations, by means of genetic variation and natural selection. It is most commonly defined as "changes in gene frequencies in populations."
A small change in genes could result in a mass epidemic. Such as the colinistists bringing yellow fever over to America.
Explanation:
Biological evolution refers to the cumulative changes that occur in a population over time. These changes are produced at the genetic level as organisms' genes mutate and/or recombine in different ways during reproduction and are passed on to future generations.
Answer:
The correct answer will be- Meiosis I, anaphase I
Explanation:
Alleles are the variant alternative forms of a gene which determines the trait of an organism. The trait or phenotype is expressed only when the two alleles controlling a single trait on separate chromosomes are aligned in a complementary position.
During gamete formation, the alleles controlling a trait segregate independently of each other. This segregation of alleles takes place during Anaphase I of meiosis I. During anaphase, the sister chromatids are separated by the mitotic spindles so that the chromosomes can reach the opposite poles.
Thus, Meiosis I, anaphase I am the correct answer.
