guys i am doing one my first assignment of my post secondary can some one plz proof read my work and check my grammar errors including if some setences are long then try to make them shorter plz its due tomorrow plz guys if any one have time to do this .. here the answers
4. In the evolutionary perspective of Chapter 3, we saw that&nbs p;genes are
located on the 46 chromosomes withi n the nucleau of all autosomal ;cells
of the body. We also saw that& nbsp;only the gametes (sex cells) w ere
different. Describe how autosomal cells& nbsp;reproduce and contrast it with ;
the way in which our gametes r eproduce to produce another distinct&nbs p;
human being.
Autosomal cells are body cells and they are same gene collections from both maternal and paternal chromosome. Each human have 22 pairs of autosomal cells and one sex cell. Autosomal cells reproduce through mitosis and meiosis. Mitosis is a term that is use for the division of autosomal cell. It occurs before meiosis that is the reduction of chromosome in sex cells. In Mitosis, autosomal cells duplicated and two daughter cells are formed. They duplicate before cell division so that, each daughter cell gets correct number of chromosomes. There is one sex chromosome that contain either the 2 (XX) for female or one(X) and one(Y) for male production.
Meiosis is another process that helps reduce the number of chromosomes in sex cell to half of its number. It produces four daughter cells, where each contains 23 single chromosomes. Reduction of cells occurs because when ovum and sperm fusses, they each contribute their 23 single chromosomes, which forms gametes that contain 46 chromosome or 23 pairs of chromosome. Each of these autosomal chromosomes contains specific information of genotype and phenotype from each parent. Genotype is a genetic material for the formation of new human being. They also contain phenotype which gives physical characteristics. For example genotype contains what color would be the eye and hair color for a particular individual and phenotype contains all the physical expression like oval or long face.
Chromosome contains the genetic substance called DNA, Which is a complex molecule that contains genetic information. However, DNA forms genes that act as a blue print for the reproduction of cell. To form one of distinct human being there is a dominant-recessive genes principle. In this principles there are either dominant or recessive genes that contributes their effects on an individual. For example, if one pair of gene contains dominant and other is recessive, then its dominant that exerts its effects, over recessive gene. To receive the recessive effects on an individual, the only way is that both of an individual's genes should be recessive. However, if you inherit a recessive gene for a trait from both parents, then an individual will show that trait. On the other hand, if an individual inherit a recessive gene from only one parent, then they might not be expressing it, but they may be recessive carrier for that gene. Thus, this is how gametes produce another distinct human being.
1. In Chapter 1, several different& nbsp;measures of age were given. Us ing
your understanding of thes various types of aging conceptes, explain
the differences between chronological ag e, and the biological , mental,&nbs p;
psychological and social conepts of ;age.
1). The different measure of aging gives the wide understanding for the difference between the chronological age with biological, mental, psychological, and social age. Initially, it's a Chronological age which is the number of years passed since the time of an individual's birth. Nevertheless, biological, mental, psychological, and social age are showing the differences with chronological age. Biological age is a person's age based on biological health. As an individual is young their health is stable, however the health may differ in terms of chronological age. For example two individual with the same chronological age might have different health. The difference that may effect to their different health is based on mental, psychological, or social impact in their life. Mental age is an individual's ability to adapt into their chronological age environment. Each individual are different in their mental age. Although, the individuals belong to same period of development, they have different ways to react in the environment. For example, an individual at the age of 16 might have higher intelligence level then to their own chronological age. This may be the causes of the biological effect that gives an outcome in the mental life. Psychological age is an individual's adaptive capacity relative to other of the same chronological age. Each individual will have different psychological ways of behaviors, thinking and acting. For example as a person grows old, some might do more physical activities like gardening, and playing golf. While, on other hand some might just sit at home and read books rather then doing physical activities. These are the differences of an individual's psychological age. Social age is an expectation to have some social roles related to person's age. In this social age it's not significant to know the persons chronological age, but the most essential issue is a person's role in the society. For example it is important to know that an individual is a mother of one kid rather then knowing her age and the expectations of the society at that particular age. Thus, the above arguments show the differences between chronological age, with biological, mental, psychological, and social age.
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