Unit 4 AP Exam: Cell Division
... 1) The centromere is a region in which A) chromatids remain attached to one another until anaphase. B) metaphase chromosomes become aligned at the metaphase plate. C) chromosomes are grouped during telophase. D) the nucleus is located prior to mitosis. E) new spindle microtubules form at either end ...
... 1) The centromere is a region in which A) chromatids remain attached to one another until anaphase. B) metaphase chromosomes become aligned at the metaphase plate. C) chromosomes are grouped during telophase. D) the nucleus is located prior to mitosis. E) new spindle microtubules form at either end ...
File
... The allele for red flower colour (R) in a certain plant is co-dominant with the allele for white flowers (R’). Thus a plant with the genotype RR’ has pink flowers. Tall (D) is dominant to dwarf (d). What would be the expected phenotypic ratio from a cross of RR’dd plants with R’R’Dd plants? ...
... The allele for red flower colour (R) in a certain plant is co-dominant with the allele for white flowers (R’). Thus a plant with the genotype RR’ has pink flowers. Tall (D) is dominant to dwarf (d). What would be the expected phenotypic ratio from a cross of RR’dd plants with R’R’Dd plants? ...
Genetics Webquest Name: What is DNA? http://learn.genetics.utah
... 20) When a sperm and egg join, they create a single cell called a _________. 21) Each child inherits a _________ set of chromosomes. What is a Trait? 22) Give an example of a physical trait: _______________ 23) A dog fetching a bone is an example of what kind of trait. 24) Scientists describe the se ...
... 20) When a sperm and egg join, they create a single cell called a _________. 21) Each child inherits a _________ set of chromosomes. What is a Trait? 22) Give an example of a physical trait: _______________ 23) A dog fetching a bone is an example of what kind of trait. 24) Scientists describe the se ...
Chapter 24
... allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid (rather than a n ...
... allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid (rather than a n ...
Biological Diversity Topic 5
... binary fission, the two new organisms created are identical. • In order for them to be identical, they have to have the same DNA. • In order for this to happen, the parent must double its DNA before it divides. • In multicellular organisms, that production of two new cells with the same number of ch ...
... binary fission, the two new organisms created are identical. • In order for them to be identical, they have to have the same DNA. • In order for this to happen, the parent must double its DNA before it divides. • In multicellular organisms, that production of two new cells with the same number of ch ...
Document
... 39) How can you predict the genotypes of a family using a pedigree? By seeing who carries a trait and who passes it on you can determine the pattern of inheritance. 40) What are some human genetic disorders caused by inherited recessive alleles? Cystic fibrosis, Tay-Sach’s, colorblindness and hemoph ...
... 39) How can you predict the genotypes of a family using a pedigree? By seeing who carries a trait and who passes it on you can determine the pattern of inheritance. 40) What are some human genetic disorders caused by inherited recessive alleles? Cystic fibrosis, Tay-Sach’s, colorblindness and hemoph ...
Chromosomal theory of inheritance
... • William Sutton and Theodor Boveri proposed the chromosome theory of heredity: the idea that genes are parts of chromosomes. • Some evidence that supported the theory: – Nuclei of egg and sperm are equal in size and contain coloured bodies that are easily visible during cell division – The number o ...
... • William Sutton and Theodor Boveri proposed the chromosome theory of heredity: the idea that genes are parts of chromosomes. • Some evidence that supported the theory: – Nuclei of egg and sperm are equal in size and contain coloured bodies that are easily visible during cell division – The number o ...
Morgan and Sex Linkage / Mutations
... Studied fruit flies – 4 pairs of homologous chromosomes but one pair was different between Male and Female. - Female had 4 identical pairs - Male had 3 identical pairs and 1 pair that was different (XY) Morgan’s Hypothesis – A pair of chromosomes determines sex XX (female); XY (male) – Called sex ...
... Studied fruit flies – 4 pairs of homologous chromosomes but one pair was different between Male and Female. - Female had 4 identical pairs - Male had 3 identical pairs and 1 pair that was different (XY) Morgan’s Hypothesis – A pair of chromosomes determines sex XX (female); XY (male) – Called sex ...
Directed Reading 10.1
... 4. Tell how genes and chromosomes are related. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _____________________________________________________________ ...
... 4. Tell how genes and chromosomes are related. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _____________________________________________________________ ...
Term 3 Review Packet
... If the answer is false, change crucial information in the statement to make it true. _____11. Rosalind Franklin discovered jumping genes. _____12. Sex influenced traits are usually autosomal. _____13. Height is both a polygenic and a complex character. _____14. A somatic cell mutation is passed on t ...
... If the answer is false, change crucial information in the statement to make it true. _____11. Rosalind Franklin discovered jumping genes. _____12. Sex influenced traits are usually autosomal. _____13. Height is both a polygenic and a complex character. _____14. A somatic cell mutation is passed on t ...
Revisiting Genetics
... Inside the nucleus • Genetic information is in the nucleus and is organized into chromosomes. • Each chromosome contains different genes that carry instructions to make proteins. ...
... Inside the nucleus • Genetic information is in the nucleus and is organized into chromosomes. • Each chromosome contains different genes that carry instructions to make proteins. ...
Document
... entangled in a process called synapsis. Crossing over can occur during this time. (Prophase I) (It is the Homologous pair that is pulled apart during Anaphase I) ...
... entangled in a process called synapsis. Crossing over can occur during this time. (Prophase I) (It is the Homologous pair that is pulled apart during Anaphase I) ...
Eukaryotic and Prokaryotic Cells
... Centromere-specific proteins Centromere-specific nucleosomes ...
... Centromere-specific proteins Centromere-specific nucleosomes ...
EOC Review Part 3
... Our bodies need to make more cells- there are two types of cell and two types of process that our bodies do. Mitosis “toes”= makes body cells/ somatic cells Makes 2 cells ALL of their chromosomes = Diploid Cells Makes identical cells Asexual reproduction Natural cloning ...
... Our bodies need to make more cells- there are two types of cell and two types of process that our bodies do. Mitosis “toes”= makes body cells/ somatic cells Makes 2 cells ALL of their chromosomes = Diploid Cells Makes identical cells Asexual reproduction Natural cloning ...
Biology Chapter 10 Meiosis Notes 3-27
... Diploid Cells are cell with two sets of chromosomes, one set from each biological parent (123 + 123). Most cells contain homologous pairs o (1 and 1, 2 and 2, 3 and 3 etc) Ex. Body cells The Diploid number is the total number of chromosomes in the cell o Abbreviated “2n” What is the human di ...
... Diploid Cells are cell with two sets of chromosomes, one set from each biological parent (123 + 123). Most cells contain homologous pairs o (1 and 1, 2 and 2, 3 and 3 etc) Ex. Body cells The Diploid number is the total number of chromosomes in the cell o Abbreviated “2n” What is the human di ...
Nuclear architecture in plants.
... Gene expression The consequences of nuclear order for gene expression are as yet unclear. Transformation exper iments suggest that, in general, chromosomal position may have little or no effect on gene expression, but other observations have revealed at least some situations in which the nuclear po ...
... Gene expression The consequences of nuclear order for gene expression are as yet unclear. Transformation exper iments suggest that, in general, chromosomal position may have little or no effect on gene expression, but other observations have revealed at least some situations in which the nuclear po ...
Mutation
... 2.) Deletions of large chromosomal regions, leading to loss of the genes 3.) Chromosomal inversions: reversing the orientation of a chromosomal segment. Gene P Gene Q ...
... 2.) Deletions of large chromosomal regions, leading to loss of the genes 3.) Chromosomal inversions: reversing the orientation of a chromosomal segment. Gene P Gene Q ...
Cell Division Notes
... Statement of Inquiry: The foundation of living systems can be understood through modeling the related forms and transformations. Date: Cell Division (p.128) In unicellular organisms, cell division is asexual reproduction in response to environmental cues In multicellular “ ” a source of new cell ...
... Statement of Inquiry: The foundation of living systems can be understood through modeling the related forms and transformations. Date: Cell Division (p.128) In unicellular organisms, cell division is asexual reproduction in response to environmental cues In multicellular “ ” a source of new cell ...
Chapter 24
... over any other allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid ( ...
... over any other allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid ( ...
Cells Unit
... Cell Division in Eukaryotes Cells Must Be Small Cells must divide because if they grew too large their DNA could not keep up with demands and materials could not efficiently be distributed. ...
... Cell Division in Eukaryotes Cells Must Be Small Cells must divide because if they grew too large their DNA could not keep up with demands and materials could not efficiently be distributed. ...
Who wants to be a millionaire template
... Glutamic acid is the amino acid that should Be coded on hemoglobin, but for Sickle-cell Anemia this amino acid is coded for ...
... Glutamic acid is the amino acid that should Be coded on hemoglobin, but for Sickle-cell Anemia this amino acid is coded for ...
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.