Biology Class Notes 5-1
... cells spend most of their time in interphase growth phase of the cell cycle cells mature and increase in size by making more cytoplasm and organelles cells also carry out most of their metabolic processes during interphase once the cell has reached its maximum size, DNA replication will oc ...
... cells spend most of their time in interphase growth phase of the cell cycle cells mature and increase in size by making more cytoplasm and organelles cells also carry out most of their metabolic processes during interphase once the cell has reached its maximum size, DNA replication will oc ...
Chromosomes and Mitosis - cK-12
... of a cell during cell division. During other phases of the cell cycle, DNA is not coiled into chromosomes. Instead, it exists as a grainy material called chromatin. The vocabulary of DNA: chromosomes, chromatids, chromatin, transcription, translation, and replication is discussed at http://www.youtu ...
... of a cell during cell division. During other phases of the cell cycle, DNA is not coiled into chromosomes. Instead, it exists as a grainy material called chromatin. The vocabulary of DNA: chromosomes, chromatids, chromatin, transcription, translation, and replication is discussed at http://www.youtu ...
Stages of Cell Cycle
... – Each chromosome and its copy (made during DNA replication) line up next to each other down the middle of the cell ...
... – Each chromosome and its copy (made during DNA replication) line up next to each other down the middle of the cell ...
Inherited diseases
... each time a cell divides to repair damage or add growth. Each new cell ends up with the full 46 chromosomes. This type of cell division is called mitosis. Another type of cell division, called meiosis, occurs when sex cells are formed. In this type of cell division, occurring inside the ovaries or t ...
... each time a cell divides to repair damage or add growth. Each new cell ends up with the full 46 chromosomes. This type of cell division is called mitosis. Another type of cell division, called meiosis, occurs when sex cells are formed. In this type of cell division, occurring inside the ovaries or t ...
CHAPTER 8
... -The spindles continue to move the homologous chromosomes to the poles. -Once movement is complete, each pole has a haploid number of chromosomes. -In most cases, cytokinesis occurs at the same time as telophase I. -At the end of telophase I and cytokinesis, two daughter cells are produced, each wit ...
... -The spindles continue to move the homologous chromosomes to the poles. -Once movement is complete, each pole has a haploid number of chromosomes. -In most cases, cytokinesis occurs at the same time as telophase I. -At the end of telophase I and cytokinesis, two daughter cells are produced, each wit ...
Pedigrees and Karyotypes
... To label a karyotype correctly, first list the number of chromosomes found in the karyotype. Ex. 46 Secondly, list the type of sex chromosomes found in the karyotype. Ex. XX Lastly, list the any abnormalities at the appropriate chromosome number. ...
... To label a karyotype correctly, first list the number of chromosomes found in the karyotype. Ex. 46 Secondly, list the type of sex chromosomes found in the karyotype. Ex. XX Lastly, list the any abnormalities at the appropriate chromosome number. ...
Cell division Chapter 10 - local.brookings.k12.sd.us
... Indicator 1: Understand the fundamental structures, functions, classifications, and mechanisms found in living things 9-12.L.1.1. Students are able to relate cellular functions and processes to specialized structures within cells. ...
... Indicator 1: Understand the fundamental structures, functions, classifications, and mechanisms found in living things 9-12.L.1.1. Students are able to relate cellular functions and processes to specialized structures within cells. ...
Cell cycle - Aurora City Schools
... Many of the stages of meiosis closely resemble corresponding stages in mitosis. Type of cell division that produces haploid gametes in diploid organisms. Like mitosis, is preceded by the replication of chromosomes. ...
... Many of the stages of meiosis closely resemble corresponding stages in mitosis. Type of cell division that produces haploid gametes in diploid organisms. Like mitosis, is preceded by the replication of chromosomes. ...
Mitosis
... Observe your preparation under the low power (X10) of a microscope Search the slide to find cells in various stages of cell division, once you have located cells in division, change to high power (X40) & try to observe several stages of division. Record the number of cells in each stage. Count at le ...
... Observe your preparation under the low power (X10) of a microscope Search the slide to find cells in various stages of cell division, once you have located cells in division, change to high power (X40) & try to observe several stages of division. Record the number of cells in each stage. Count at le ...
p. synthesis
... 1. gene pool - all the genes in a population 2. allele frequency - % occurrence of a specific allele in a population 3. phenotype frequency - % occurrence of an individual in a population with a trait 4. genotype frequency - % occurrence of individuals in a population with a specific ...
... 1. gene pool - all the genes in a population 2. allele frequency - % occurrence of a specific allele in a population 3. phenotype frequency - % occurrence of an individual in a population with a trait 4. genotype frequency - % occurrence of individuals in a population with a specific ...
common formative assessment planning template
... mass and shape of individuals in the same family. 3. A gene is a section of DNA that contains instructions for a specific trait. Each chromosome in a pair carries the same genes in the same place, but there are different versions of each gene. ...
... mass and shape of individuals in the same family. 3. A gene is a section of DNA that contains instructions for a specific trait. Each chromosome in a pair carries the same genes in the same place, but there are different versions of each gene. ...
Cell Cycle and Cell Division - Ms. Ottolini`s Biology Wiki!
... 8. Diploid vs. Haploid Cells Diploid (2n): ___________________________________________________________________ ___________________________________________________________________ Haploid (n): ___________________________________________________________________ _______________________________________ ...
... 8. Diploid vs. Haploid Cells Diploid (2n): ___________________________________________________________________ ___________________________________________________________________ Haploid (n): ___________________________________________________________________ _______________________________________ ...
Cell Reproduction
... is the process by which ”gametes” (sex cells) , with half the number of chromosomes, are produced. ...
... is the process by which ”gametes” (sex cells) , with half the number of chromosomes, are produced. ...
cp bio cell cycle mitosis powerpoint 2014
... that an object occupies, “capacity” Large volume SLOWS down movement of materials What is the VOLUME of the ...
... that an object occupies, “capacity” Large volume SLOWS down movement of materials What is the VOLUME of the ...
Homologous chromosomes
... mitosis. • Chromosomes: carry genetic information (DNA) that is passed from one generation of cells to the next. • DNA wraps around proteins (histones) that condense it. ...
... mitosis. • Chromosomes: carry genetic information (DNA) that is passed from one generation of cells to the next. • DNA wraps around proteins (histones) that condense it. ...
Updated BioI_Unit3_Voc
... Chapter 8: Cell Reproduction, pp151-164 1 anaphase; 2 asexual reproduction; 3 autosome; 4 binary fission; 5 cell plate; 6 centromere; 7 chromatid; 8 chromatin; 9 chromosome; 10 crossing over; 11 cytokinesis; 12 diploid; 13 gamete; 14 genetic recombination; 15 haploid; 16 histone; 17 homologous chrom ...
... Chapter 8: Cell Reproduction, pp151-164 1 anaphase; 2 asexual reproduction; 3 autosome; 4 binary fission; 5 cell plate; 6 centromere; 7 chromatid; 8 chromatin; 9 chromosome; 10 crossing over; 11 cytokinesis; 12 diploid; 13 gamete; 14 genetic recombination; 15 haploid; 16 histone; 17 homologous chrom ...
The Process of Cell Division
... The centrioles which were duplicated during interphase start to move towards opposite ends or the poles of the cell. As prophase ends, the chromosomes coil more tightly, the nucleolus disappears, and the nuclear envelope breaks ...
... The centrioles which were duplicated during interphase start to move towards opposite ends or the poles of the cell. As prophase ends, the chromosomes coil more tightly, the nucleolus disappears, and the nuclear envelope breaks ...
Meiosis TEACHER
... along metaphase plate like regular mitosis. During Anaphase II, CENTROMERES BREAK and each SISTER CHROMATID is pulled to opposite sides of the cell. Nuclei reform and cytokinesis usually occurs (although it is ...
... along metaphase plate like regular mitosis. During Anaphase II, CENTROMERES BREAK and each SISTER CHROMATID is pulled to opposite sides of the cell. Nuclei reform and cytokinesis usually occurs (although it is ...
Cell Reproduction/Mitosis
... growing (i.e. breaking down sugars, making ATP, enzymes) • Sometimes a cell will prepare to divide – 1 mother cell 2 daughter cells ...
... growing (i.e. breaking down sugars, making ATP, enzymes) • Sometimes a cell will prepare to divide – 1 mother cell 2 daughter cells ...
Chromosomal Basis of Inheritance
... If unlinked: 1:1:1:1 ratio. If linked: ratio will be altered. ...
... If unlinked: 1:1:1:1 ratio. If linked: ratio will be altered. ...
nondisjunction
... The next question is, how do these flies get this abnormal chromosome number? The answer is called nondisjunction. During this mating the male parent produces normal sperm, half containing the X R chromosome and half containing the Y chromosome. Recall that during meiosis the X r chromosome produces ...
... The next question is, how do these flies get this abnormal chromosome number? The answer is called nondisjunction. During this mating the male parent produces normal sperm, half containing the X R chromosome and half containing the Y chromosome. Recall that during meiosis the X r chromosome produces ...
7 dna structure and chromosome organization
... of chromosomes in a cell is equivalent to the number of functional centromeres. (2) The number of DNA molecules is equivalent to the number of chromatids. (3) The number of DNA molecules doubles during the S phase (DNA replication) of interphase; however, the number of chromosomes stays the same bec ...
... of chromosomes in a cell is equivalent to the number of functional centromeres. (2) The number of DNA molecules is equivalent to the number of chromatids. (3) The number of DNA molecules doubles during the S phase (DNA replication) of interphase; however, the number of chromosomes stays the same bec ...
Meiosis
Meiosis /maɪˈoʊsɨs/ is a specialized type of cell division which reduces the chromosome number by half. This process occurs in all sexually reproducing single-celled and multi-celled eukaryotes, including animals, plants, and fungi. Errors in meiosis resulting in aneuploidy are the leading known cause of miscarriage and the most frequent genetic cause of developmental disabilities. In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells each with half the number of chromosomes as the original parent cell. The two meiotic divisions are known as meiosis I and meiosis II. Before meiosis begins, during S phase of the cell cycle, the DNA of each chromosome is replicated so that it consists of two identical sister chromatids. In meiosis I, homologous chromosomes pair with each other and can exchange genetic material in a process called chromosomal crossover. The homologous chromosomes are then segregated into two new daughter cells, each containing half the number of chromosomes as the parent cell. At the end of meiosis I, sister chromatids remain attached and may differ from one another if crossing-over occurred. In meiosis II, the two cells produced during meiosis I divide again. Sister chromatids segregate from one another to produce four total daughter cells. These cells can mature into various types of gametes such as ova, sperm, spores, or pollen.Because the number of chromosomes is halved during meiosis, gametes can fuse (i.e. fertilization) to form a zygote with a complete chromosome count containing a combination of paternal and maternal chromosomes. Thus, meiosis and fertilization facilitate sexual reproduction with successive generations maintaining the same number of chromosomes. For example, a typical diploid human cell contains 23 pairs of chromosomes (46 total, half of maternal origin and half of paternal origin). Meiosis produces haploid gametes with one set of 23 chromosomes. When two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes. This same pattern, but not the same number of chromosomes, occurs in all organisms that utilize meiosis. Thus, if a species has 30 chromosomes in its somatic cells, it will produce gametes with 15 chromosomes.