Practice questions for exam 3
... a. can be used to make many copies of recombinant DNA introduced into a host cell b. can be used to alter the inherited characteristics of an organism c. raises ethical questions in the minds of some people ...
... a. can be used to make many copies of recombinant DNA introduced into a host cell b. can be used to alter the inherited characteristics of an organism c. raises ethical questions in the minds of some people ...
Advanced Genetics: Karyotypes and Pedigrees
... cell, for one organism • Karyotypes can show: • changes in chromosomes • deletion of part or loss of a chromosome • extra chromosomes ...
... cell, for one organism • Karyotypes can show: • changes in chromosomes • deletion of part or loss of a chromosome • extra chromosomes ...
Mitotic cell cycle – arrange the diagrams of the stages of mitosis into
... Telophase. New membranes form around the daughter nuclei while the chromosomes disperse and are no longer visible under the light microscope. Interphase. The cell is engaged in metabolic activity and performing its duty as part of a tissue. The DNA duplicates during interphase to prepare for mitosis ...
... Telophase. New membranes form around the daughter nuclei while the chromosomes disperse and are no longer visible under the light microscope. Interphase. The cell is engaged in metabolic activity and performing its duty as part of a tissue. The DNA duplicates during interphase to prepare for mitosis ...
Parent cell Mitosis Prophase Metaphase Anaphase Telophase
... DNA replicates! Two identical cells form! The cell begins to physically divide. The chromosomes are at the poles of the cell. The nuclear envelope reforms around the two sets of chromosomes. Chromosomes line up in the middle – at the metaphase plate (equator) of cell. centromeres. ...
... DNA replicates! Two identical cells form! The cell begins to physically divide. The chromosomes are at the poles of the cell. The nuclear envelope reforms around the two sets of chromosomes. Chromosomes line up in the middle – at the metaphase plate (equator) of cell. centromeres. ...
Mitosis Notes
... Mitosis begins (cell begins to divide) Centrioles (or poles) appear and begin to move ...
... Mitosis begins (cell begins to divide) Centrioles (or poles) appear and begin to move ...
Chapter 5 Heredity & Genetics
... mistake; bases may pair up incorrectly. The codon are changed the altered gene is passed on to the new cell. ...
... mistake; bases may pair up incorrectly. The codon are changed the altered gene is passed on to the new cell. ...
Mitosis Notes
... MITOSIS NOTES • DNA is found in the nucleus of • Chromatin – • Chromosome – condensed DNA bound in the center by a __________ ...
... MITOSIS NOTES • DNA is found in the nucleus of • Chromatin – • Chromosome – condensed DNA bound in the center by a __________ ...
3 Genetics - Kerboodle
... amniotic fluid using a needle and syringe. Chorionic villus sampling technique for diagnosing genetic defects while a foetus is in the uterus. A small sample of the placenta is removed and analysed. Crossing over exchange of genetic material between non-sister chromatids during meiosis I. Diploid a ...
... amniotic fluid using a needle and syringe. Chorionic villus sampling technique for diagnosing genetic defects while a foetus is in the uterus. A small sample of the placenta is removed and analysed. Crossing over exchange of genetic material between non-sister chromatids during meiosis I. Diploid a ...
Ch 8 HW - TeacherWeb
... 2. Vocabulary- on a separate sheet of paper number terms and write definitions. When there is 2 words (vs.) be sure to distinguish differences between them. Indent on the line below and write an example or sentence or draw a picture. 1. binary fission 2. chromosomes 3. asexual reproduction 4. sexual ...
... 2. Vocabulary- on a separate sheet of paper number terms and write definitions. When there is 2 words (vs.) be sure to distinguish differences between them. Indent on the line below and write an example or sentence or draw a picture. 1. binary fission 2. chromosomes 3. asexual reproduction 4. sexual ...
Hierarchy of Genetics
... - are sections of DNA on a chromosome - They determine the traits that show up in an organism -Different forms of a trait that a gene may have are called alleles ...
... - are sections of DNA on a chromosome - They determine the traits that show up in an organism -Different forms of a trait that a gene may have are called alleles ...
Genetics Vocabulary Crossword Puzzle Across
... 18. This trait is masked if a dominant allele is present 19. a strand of DNA that contains genes 20. The number of chromosomes in a gamete is called the ______ number. (In humans it is 23) 21. the genetic make-up of an individual; often represented by 2 letters (ex: TT, Tt, tt) 22. two of the same a ...
... 18. This trait is masked if a dominant allele is present 19. a strand of DNA that contains genes 20. The number of chromosomes in a gamete is called the ______ number. (In humans it is 23) 21. the genetic make-up of an individual; often represented by 2 letters (ex: TT, Tt, tt) 22. two of the same a ...
Genetics - the science of heredity and variation
... parents and offspring; sum of qualities genetically derived from one’s parents Allele - one of a pair of genes that occupy the same location on homologous chromosomes and affect the same trait in animals Diploid - refers to paired chromosomes in body cells Gametes - male or female reproductive cells ...
... parents and offspring; sum of qualities genetically derived from one’s parents Allele - one of a pair of genes that occupy the same location on homologous chromosomes and affect the same trait in animals Diploid - refers to paired chromosomes in body cells Gametes - male or female reproductive cells ...
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.