LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 1. Fibres occurring in the region of phloem are otherwise known as: a) Bast ...
... 1. Fibres occurring in the region of phloem are otherwise known as: a) Bast ...
Changes in chromosome structure (continued):
... This individual has all the material needed, just switched around (translocated), so they should have no health problems. However there can be a problem when this person has children. Remember that when the gametes are made, each parent gives one of each chromosome pair. What would happen if this pe ...
... This individual has all the material needed, just switched around (translocated), so they should have no health problems. However there can be a problem when this person has children. Remember that when the gametes are made, each parent gives one of each chromosome pair. What would happen if this pe ...
03-Biological 42-3-Rosa
... Karyotypes of seventeen Hoplias malabaricus specimens, collected in the fish culture station of UNOPAR (University of Northern Paraná), were analyzed. The station is in the Claro River system in the Tibagi River basin. Two distinct and coexistent karyotype forms (cytotypes) were identified, comprisi ...
... Karyotypes of seventeen Hoplias malabaricus specimens, collected in the fish culture station of UNOPAR (University of Northern Paraná), were analyzed. The station is in the Claro River system in the Tibagi River basin. Two distinct and coexistent karyotype forms (cytotypes) were identified, comprisi ...
Review 1 - LFHS AP Biology
... 6. During our transformation experiment, what 2 things did we do to our bacteria to make it more competent? How did we select for the transformants? ...
... 6. During our transformation experiment, what 2 things did we do to our bacteria to make it more competent? How did we select for the transformants? ...
biology trimester b review sheet 2013-2014 - Nyland-Biology-2013-14
... 32. Recognize patterns of co-dominance, incomplete dominance, multiple alleles and simple dominance, sex linked 33. Be able to use punnett squares to find probability of traits of the different inheritance types. How many chromosomes do humans possess? 34. What can be seen in a karyotype? 35. Explai ...
... 32. Recognize patterns of co-dominance, incomplete dominance, multiple alleles and simple dominance, sex linked 33. Be able to use punnett squares to find probability of traits of the different inheritance types. How many chromosomes do humans possess? 34. What can be seen in a karyotype? 35. Explai ...
Ecology Notes TEK 8.11 (B) Investigate how
... Some species are almost always found living together. A close relationship between two or more organisms of different species that live in direct contact is called symbiosis. Three kinds of symbiosis are mutualism, in which both partners benefit; commensalism, a relationship that benefits one spe ...
... Some species are almost always found living together. A close relationship between two or more organisms of different species that live in direct contact is called symbiosis. Three kinds of symbiosis are mutualism, in which both partners benefit; commensalism, a relationship that benefits one spe ...
Paul Wordsworth
... that ankylosing spondylitis is at least in part a genetic disorder that can run in families. However, it is quite distinct from the “classic” genetic diseases, which are caused by mutations in single genes, in that an obvious recurring pattern of inheritance cannot be clearly defined in AS. In contr ...
... that ankylosing spondylitis is at least in part a genetic disorder that can run in families. However, it is quite distinct from the “classic” genetic diseases, which are caused by mutations in single genes, in that an obvious recurring pattern of inheritance cannot be clearly defined in AS. In contr ...
EOC Practice Quiz (3) - Duplin County Schools
... 32. What is the process that occurs during meiosis that causes genetic variation? a. Cytokinesis b. prophase 1 c. crossing-over d. genetic mutations 33. When compared to mitosis, meiosis makes what kind of cells? a. 4 genetically similar diploid cells c. 2 genetically different haploid cells b. 2 ge ...
... 32. What is the process that occurs during meiosis that causes genetic variation? a. Cytokinesis b. prophase 1 c. crossing-over d. genetic mutations 33. When compared to mitosis, meiosis makes what kind of cells? a. 4 genetically similar diploid cells c. 2 genetically different haploid cells b. 2 ge ...
Chapters 12 through 16 Unit objective answers checked
... 1) What loses heat faster – an elephant or a mouse? Why? A mouse will lose heat faster because it has a smaller volume to surface area ratio. 2) Why do cells divide? Cells divide in order to maintain a small volume to surface area ratio. This ensures that the cells are efficient in transporting nutr ...
... 1) What loses heat faster – an elephant or a mouse? Why? A mouse will lose heat faster because it has a smaller volume to surface area ratio. 2) Why do cells divide? Cells divide in order to maintain a small volume to surface area ratio. This ensures that the cells are efficient in transporting nutr ...
Reading Guide_09_EB_Mitosis
... 23. Critical Thinking: Think back to our first unit, where we described the structures of a cell (nucleus, mitochondria, ER, lysosomes, cytoskeleton, etc…). All of these structures must be duplicated using building blocks transported into the cell. Remember, also, that proteins not only form a part ...
... 23. Critical Thinking: Think back to our first unit, where we described the structures of a cell (nucleus, mitochondria, ER, lysosomes, cytoskeleton, etc…). All of these structures must be duplicated using building blocks transported into the cell. Remember, also, that proteins not only form a part ...
Reading Guide 09 - Cell Cycle, DNA Replication, and Mitosis
... Chapter 8, pg 120-129 (What Cellular Reproduction Accomplishes, The Cell Cycle and Mitosis) 1. To all the words/phrases in the text that are in BOLD: Highlight in your text or rewrite them or organize them in some way (like flash cards or a table) to help you to learn and understand them. 2. Name a ...
... Chapter 8, pg 120-129 (What Cellular Reproduction Accomplishes, The Cell Cycle and Mitosis) 1. To all the words/phrases in the text that are in BOLD: Highlight in your text or rewrite them or organize them in some way (like flash cards or a table) to help you to learn and understand them. 2. Name a ...
Biology 3A Exam 3 Study Guide The exam will consist of multiple
... Be able to label a diagram of the different phases. Be able to identify the different phases of both plant and animal cells undergoing cell division. Differences between plant and animal cells. Difference between chromatin, chromosomes and chromatids. Know how many chromosomes are in the daughter ce ...
... Be able to label a diagram of the different phases. Be able to identify the different phases of both plant and animal cells undergoing cell division. Differences between plant and animal cells. Difference between chromatin, chromosomes and chromatids. Know how many chromosomes are in the daughter ce ...
Unit: 2
... 11. What element MUST be present for both steps of cellular respiration to occur? Unit: 6: 1. What is a somatic cell? A gamete? 2. What types of organisms go through binary fission? ...
... 11. What element MUST be present for both steps of cellular respiration to occur? Unit: 6: 1. What is a somatic cell? A gamete? 2. What types of organisms go through binary fission? ...
File
... A. They increase the amount of energy transferred from the lungs to the blood.! B. They increase the flexibility of the lungs as they expand during inhalation.! C. They increase the volume of the lungs, allowing more oxygen to be inhaled.! D. They increase the surface area of the lungs, allowing eff ...
... A. They increase the amount of energy transferred from the lungs to the blood.! B. They increase the flexibility of the lungs as they expand during inhalation.! C. They increase the volume of the lungs, allowing more oxygen to be inhaled.! D. They increase the surface area of the lungs, allowing eff ...
ppt
... – Homologous chromosomes come together as pairs by synapsis – Each pair, with four chromatids, is called a tetrad – Nonsister chromatids exchange genetic material by crossing over ...
... – Homologous chromosomes come together as pairs by synapsis – Each pair, with four chromatids, is called a tetrad – Nonsister chromatids exchange genetic material by crossing over ...
MCQ Sample I- Blue
... 4. Which of the following is NOT TRUE about bacterial chromosomes? a) the bacterial chromosome is a circular loop of DNA b) the bacterial chromosome is in the cytoplasm of the cell c) the bacterial chromosome is wrapped around histone proteins d) bacteria have the haploid number, but not the diploid ...
... 4. Which of the following is NOT TRUE about bacterial chromosomes? a) the bacterial chromosome is a circular loop of DNA b) the bacterial chromosome is in the cytoplasm of the cell c) the bacterial chromosome is wrapped around histone proteins d) bacteria have the haploid number, but not the diploid ...
09Johnson
... centrioles separate in the center of the cell and migrate to opposite ends (“poles”) of the cell • the centrioles start to form a network of protein cables called the spindle • each cable in the spindle is made of microtubules • some of the microtubules extend toward the centromere of the chromoso ...
... centrioles separate in the center of the cell and migrate to opposite ends (“poles”) of the cell • the centrioles start to form a network of protein cables called the spindle • each cable in the spindle is made of microtubules • some of the microtubules extend toward the centromere of the chromoso ...
Themes in the Development of DNA Science
... individual’s ability to adapt to environmental conditions and/or exploit new food resources. This “adaptive” changge increases the individual’s chances to survive and to reproduce. 4) Adaptive changes are passed on to offspring as part of their hereditary endowment. These individuals are, in turn, f ...
... individual’s ability to adapt to environmental conditions and/or exploit new food resources. This “adaptive” changge increases the individual’s chances to survive and to reproduce. 4) Adaptive changes are passed on to offspring as part of their hereditary endowment. These individuals are, in turn, f ...
Ch. 14 The Human Genome-Sec. 1 Human Heredity
... 20% of African Americans are carriers for sickle cell disease. Children who receive a recessive gene from each parent can become blind. Arms and legs can become paralyzed or even die. Strokes and heart attacks are common. Treatments are available to decrease the complications of this disease but th ...
... 20% of African Americans are carriers for sickle cell disease. Children who receive a recessive gene from each parent can become blind. Arms and legs can become paralyzed or even die. Strokes and heart attacks are common. Treatments are available to decrease the complications of this disease but th ...
Document
... When you make new cells, your body is putting together different letters of the DNA alphabet. Even with just four letters, the DNA alphabet spells out all of the information you need to create new cells and to stay healthy. The order of the DNA bases is called the sequence. Just like the order of th ...
... When you make new cells, your body is putting together different letters of the DNA alphabet. Even with just four letters, the DNA alphabet spells out all of the information you need to create new cells and to stay healthy. The order of the DNA bases is called the sequence. Just like the order of th ...
Chromosome
A chromosome (chromo- + -some) is a packaged and organized structure containing most of the DNA of a living organism. It is not usually found on its own, but rather is complexed with many structural proteins called histones as well as associated transcription (copying of genetic sequences) factors and several other macromolecules. Two ""sister"" chromatids (half a chromosome) join together at a protein junction called a centromere. Chromosomes are normally visible under a light microscope only when the cell is undergoing mitosis. Even then, the full chromosome containing both joined sister chromatids becomes visible only during a sequence of mitosis known as metaphase (when chromosomes align together, attached to the mitotic spindle and prepare to divide). This DNA and its associated proteins and macromolecules is collectively known as chromatin, which is further packaged along with its associated molecules into a discrete structure called a nucleosome. Chromatin is present in most cells, with a few exceptions - erythrocytes for example. Occurring only in the nucleus of eukaryotic cells, chromatin composes the vast majority of all DNA, except for a small amount inherited maternally which is found in mitochondria. In prokaryotic cells, chromatin occurs free-floating in cytoplasm, as these cells lack organelles and a defined nucleus. The main information-carrying macromolecule is a single piece of coiled double-stranded DNA, containing many genes, regulatory elements and other noncoding DNA. The DNA-bound macromolecules are proteins, which serve to package the DNA and control its functions. Chromosomes vary widely between different organisms. Some species such as certain bacteria also contain plasmids or other extrachromosomal DNA. These are circular structures in the cytoplasm which contain cellular DNA and play a role in horizontal gene transfer.Compaction of the duplicated chromosomes during cell division (mitosis or meiosis) results either in a four-arm structure (pictured to the right) if the centromere is located in the middle of the chromosome or a two-arm structure if the centromere is located near one of the ends. Chromosomal recombination during meiosis and subsequent sexual reproduction plays a vital role in genetic diversity. If these structures are manipulated incorrectly, through processes known as chromosomal instability and translocation, the cell may undergo mitotic catastrophe and die, or it may unexpectedly evade apoptosis leading to the progression of cancer.In prokaryotes (see nucleoids) and viruses, the DNA is often densely packed and organized. In the case of archaea by homologs to eukaryotic histones, in the case of bacteria by histone-like proteins. Small circular genomes called plasmids are often found in bacteria and also in mitochondria and chloroplasts, reflecting their bacterial origins.