Answer: a. Genetic recombination (crossing over)
b. Can also be explained in terms of crossing over
c. Non disjunction of homologous chromosomes in meiosis 1
Explanation:
The process that allows for the transfer of both the paternal and maternal materials to is the crossing over process that takes at meiosis 1 changing them to secondary spermatocytes. While they are still primary spermatocytes, they are still diploid cells having both the maternal and paternal chromosomes. But since the spermatozoon is an haploid cell, it is able to retail some of both parents chromosome by the crossing over event which takes place between homologous paternal and maternal chromosomes allowing them to exchange materials. Thus the chromosomal contents of the primary spermatocyte differs from that of the spermatozoon.
C. This can occur as a result of the one of the homologous chromosome pair refusing to separate at meiosis 1 with one gamete containing 4 chromosomes/8 sister chromatids and the second having 2 chromosomes/4 sister chromatids.
Model two because it includes more organelles
Answer:
oral interview and psychological inventories
Explanation:
Through degree training, psychology professionals are acquiring a set of tools, techniques, procedures and methods, from different theoretical schools, which are used to evaluate and intervene with the people they work with. Some call these people "patients", but in the field of sport, it is preferable to speak of "athletes" or simply "individuals", since the word patient, from the biomedical paradigm, refers to "passivity", to someone who suffers pain and expects the professional to "take it away." The individual with whom the sports psychologist works (the athlete or the team, the coach, the referee or any other “actor” in the field of sport) could say, is a worker, that is, that is not waiting for solutions provided by the psychologist, but works helped by him to improve his psychological skills for training and competition, without neglecting his health and personal well-being.
The objective of this work is to present the psychological interview as a tool widely used by professionals who work in this field, but little studied, in relation to its objectives, how to carry it out and its scope.
Answer:
Adaptations to a common environment and examples of convergent evolution
Explanation:
Convergent evolution is a process by which two independent and phylogenetically separated organisms, get to develop similar structures or behavior to survive. These structures make possible a better performance in a similar environment. These organisms are morphologically or ethologically similar in their whole bodies or just in parts.
Convergent evolution occurs in different phylogenetic branches independently from each other. It results from the need of different organisms to adapt to a similar environment and to solve a problem from that particular ecological niche. Ecological pressures acting on them might be similar, modeling the organisms´ phenotype. Each evolutive branch ends by developing the same structures, which they both find effective in their environment.
In the exposed example, Ichthyosaurs (reptile) and fishes are separated species on evolutive time, corresponding to different phylogenetic lineages. Both of them inhabit the same aquatic environment. Pressures of the habitat acted on them and modeling their phenotypes. These species need to adapt to living in water, moving, feeding, scaping, chasing, etc. So both species arrived at the same solution. They developed dorsal fins and tails, which are important to stabilize the body in the water while swimming, making it more hydrodynamic and getting to propel better.
