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(Solved): 1. Reproduction is one aspect of adaptation and change in which genetic material is passed to offsp ...
1. Reproduction is one aspect of adaptation and change in which genetic material is passed to offspring. This is accomplished in part by cell division. Mitosis and meiosis are two types of cell division found in organisms. Choose the row that correctly identifies a feature unique to mitosis and meiosis. a) Row b) Row B c) Row d) Row D HINT: Review the chart on the bottom of page 74 of your textbook. 2. Lodgepole pines of North America are affected by the following abiotic factors: a) fires and fungus b) pine beetles and fungus c) warm dry summers and cold wet winters d) cold wet winters and pine beetles 3. The biotic factors of the North American ecosystem that influence lodgepole pine population are a) fire, pine beetles, and fungus b) warm dry summers and cold wet winters c) clear cutting by lumber companies and winter temperatures d) the mountain pine beetle parasite and fungus
Expert Answer
Question Number 1:Option "B" is correct here.Question Number 2:The correct answer is d) cold, wet winters and pine beetles.Question Number 3:The correct answer is d) the mountain pine beetle parasite and fungus.Explanation of question 1:Mitosis and meiosis are two distinct processes of cell division. Mitosis primarily occurs in somatic cells and is responsible for the growth, repair, and maintenance of body tissues. It involves a single round of division and forms two genetically identical daughter cells. During mitosis, the daughter cells retain the same number of chromosomes as the parent cell, which is typically diploid (containing two sets of chromosomes).In contrast, meiosis occurs in germ cells and plays a crucial role in sexual reproduction. It consists of two successive rounds of division, producing four non-identical daughter cells. The chromosome number is halved during meiosis, forming haploid daughter cells, each containing a single set of chromosomes. This reduction in chromosome number allows for the fusion of gametes during fertilization, ultimately restoring the diploid chromosome number in the offspring.Furthermore, meiosis involves a process called genetic recombination or crossing over, which occurs during prophase I. By exchanging the genetic material between homologous chromosomes promotes genetic diversity among offspring. In contrast, mitosis does not involve genetic recombination.