Quiz – Mitosis
... In all cases, the cells are dragon in origin. Dragons have a diploid number of 16. Diploid is 2n, or the total number of chromosomes in both sets of chromosomes. _______ 15) How many chromosomes are in a female dragon’s muscle cell that is in metaphase of mitosis? What kind of chromosomes? (SAC or D ...
... In all cases, the cells are dragon in origin. Dragons have a diploid number of 16. Diploid is 2n, or the total number of chromosomes in both sets of chromosomes. _______ 15) How many chromosomes are in a female dragon’s muscle cell that is in metaphase of mitosis? What kind of chromosomes? (SAC or D ...
file - Athens Academy
... euchromatin and a distinctive, large, heterochromatic knob. The additional DNA is known as the Ab10 haplotype, and is responsible for neocentromere activity and preferential segregation (meiotic drive). All chromosomes that are heterozygous for knobs undergo meiotic drive in the presence of Ab10. Th ...
... euchromatin and a distinctive, large, heterochromatic knob. The additional DNA is known as the Ab10 haplotype, and is responsible for neocentromere activity and preferential segregation (meiotic drive). All chromosomes that are heterozygous for knobs undergo meiotic drive in the presence of Ab10. Th ...
Genes and Inheritance
... DNA, Genes, Chromosomes, Cells, Organisms Cell division-Mitosis and Meiosis DNA to proteins Variation in DNA = Genetic Variation Genotype and Phenotype ...
... DNA, Genes, Chromosomes, Cells, Organisms Cell division-Mitosis and Meiosis DNA to proteins Variation in DNA = Genetic Variation Genotype and Phenotype ...
The Cell Cycle and Cancer
... The stage of cell division in which the nucleus divides into two nuclei; in this stage one copy of the DNA is copied (replicated) and distributed to each new daughter cell. 4. List the four phases of mitosis? Prophase – Metaphase – Anaphase - Telophase 5. In which stage does the cell spend most of i ...
... The stage of cell division in which the nucleus divides into two nuclei; in this stage one copy of the DNA is copied (replicated) and distributed to each new daughter cell. 4. List the four phases of mitosis? Prophase – Metaphase – Anaphase - Telophase 5. In which stage does the cell spend most of i ...
I. Down Syndrome - Plain Local Schools
... chromosomes can be damaged and explain how a “jumping gene” can affect other genes. Vocabulary: 1. Trisomy 21 2. Down’s syndrome 3. Nondisjunction 4. Duplication 5. Deletion 6. Inversion 7. Translocation 8. Transposon Concept 12.2: Accidents affecting chromosomes can cause disorders. I. Down Syndrom ...
... chromosomes can be damaged and explain how a “jumping gene” can affect other genes. Vocabulary: 1. Trisomy 21 2. Down’s syndrome 3. Nondisjunction 4. Duplication 5. Deletion 6. Inversion 7. Translocation 8. Transposon Concept 12.2: Accidents affecting chromosomes can cause disorders. I. Down Syndrom ...
Document
... The body cells of humans have 46 chromosomes that form 23 pairs. Chromosomes are made up of many genes joined together. You have 23 pairs of chromosome. Each chromosome has 200 – 3000 genes. Therefore, you have between 20,000 – 25,000 genes. Each gene controls a trait. About Chromosome 1 Chromosome ...
... The body cells of humans have 46 chromosomes that form 23 pairs. Chromosomes are made up of many genes joined together. You have 23 pairs of chromosome. Each chromosome has 200 – 3000 genes. Therefore, you have between 20,000 – 25,000 genes. Each gene controls a trait. About Chromosome 1 Chromosome ...
CELL DIVISION
... As cells grow they must divide Why?…(write your own answer) DNA and cell division Both daughter cells need a complete set of DNA, nothing missing, nothing extra DNA starts out as Chromatin (spread out DNA molecules) ...
... As cells grow they must divide Why?…(write your own answer) DNA and cell division Both daughter cells need a complete set of DNA, nothing missing, nothing extra DNA starts out as Chromatin (spread out DNA molecules) ...
Slide 1
... suggested that the individuals had been members of the aristocracy. The remains were compared with those found in 1991 and with the DNA of Prince Philip and other living relatives of the Romanovs; the resulting data proved conclusively that the bodies were those of Alexei and o ...
... suggested that the individuals had been members of the aristocracy. The remains were compared with those found in 1991 and with the DNA of Prince Philip and other living relatives of the Romanovs; the resulting data proved conclusively that the bodies were those of Alexei and o ...
Document
... Homologous chromosomes have the same genes as each other, in the same sequence, but not necessarily the same alleles of those genes. ...
... Homologous chromosomes have the same genes as each other, in the same sequence, but not necessarily the same alleles of those genes. ...
Introduction to Genetics Klug 8th Edition
... 1880’s 1890’s Mitosis/meiosis 1900 Correns confirms Mendel’s work early1900’s Sutton and Boveri-Chromosome Theory of Inheritance Early 1900’s Mutations discoveries led to gene mapping 1920’s-1940’s Avery, McLeod, McCarty –DNA carries information 1952-Watson and Crick-double helix ...
... 1880’s 1890’s Mitosis/meiosis 1900 Correns confirms Mendel’s work early1900’s Sutton and Boveri-Chromosome Theory of Inheritance Early 1900’s Mutations discoveries led to gene mapping 1920’s-1940’s Avery, McLeod, McCarty –DNA carries information 1952-Watson and Crick-double helix ...
Mitosis and Meiosis
... -division of somatic (body) cells • Meiosis -division of gametes (sex cells – sperm and eggs) ...
... -division of somatic (body) cells • Meiosis -division of gametes (sex cells – sperm and eggs) ...
SOLVING REAL WORLD PROBLEMS-
... INVERSION- chromosome piece attaches to original chromosome in reverse orientation ...
... INVERSION- chromosome piece attaches to original chromosome in reverse orientation ...
Sc9 - a 3.1(student notes)
... To be able to fit it all in cells, they are rolled up together in what we call : o Chromosomes. ...
... To be able to fit it all in cells, they are rolled up together in what we call : o Chromosomes. ...
Name - gst boces
... 5. Why do cells need to divide (4 reasons)? 6. What is a chromosome? A gene? 7. Draw a diagram showing the process of fertilization, including the zygote. Label the sperm cell, egg cell, and zygote. 8. What process creates sperm and egg cells? 9. What process does the zygote use to turn into an embr ...
... 5. Why do cells need to divide (4 reasons)? 6. What is a chromosome? A gene? 7. Draw a diagram showing the process of fertilization, including the zygote. Label the sperm cell, egg cell, and zygote. 8. What process creates sperm and egg cells? 9. What process does the zygote use to turn into an embr ...
Mitosis and Cell Cycle Test Review Sheet
... NAME ____________________________ 1. Describe the difference between asexual and sexual reproduction. 2. Why are cells so small? 3. What is the relationship of surface area to volume ratio? 4. Is it better to have a high (like 600:1) or low (like 2:1) SA/V ratio and why? 5. 90% of the time, DNA can ...
... NAME ____________________________ 1. Describe the difference between asexual and sexual reproduction. 2. Why are cells so small? 3. What is the relationship of surface area to volume ratio? 4. Is it better to have a high (like 600:1) or low (like 2:1) SA/V ratio and why? 5. 90% of the time, DNA can ...
Section 6.1 Reinforcement
... KEY CONCEPT Gametes have half the number of chromosomes that body cells have. Your body is made of two basic cell types. One basic type are somatic cells, also called body cells, which make up almost all of your tissues and organs. The second basic type are germ cells, which are located in your repr ...
... KEY CONCEPT Gametes have half the number of chromosomes that body cells have. Your body is made of two basic cell types. One basic type are somatic cells, also called body cells, which make up almost all of your tissues and organs. The second basic type are germ cells, which are located in your repr ...
File
... A cell that contains both sets of homologous chromosomes has a diploid number of chromosomes (meaning “two sets”). Haploid cells contain only one set of chromosomes. Gametes are haploid. Phases of Meiosis Meiosis is the process that separates homologous pairs of chromosomes in a diploid cell, formin ...
... A cell that contains both sets of homologous chromosomes has a diploid number of chromosomes (meaning “two sets”). Haploid cells contain only one set of chromosomes. Gametes are haploid. Phases of Meiosis Meiosis is the process that separates homologous pairs of chromosomes in a diploid cell, formin ...
14-2 Human Chromosomes – Reading Guide
... 1. Genes make up only a small part of chromosomes; only about _________% of chromosome’s DNA functions as genes. 2. The first two human chromosomes whose sequences were determined were chromosome ______ & ______. 3. Chromosome 21 contains about _______ genes, including one associated with amyotropic ...
... 1. Genes make up only a small part of chromosomes; only about _________% of chromosome’s DNA functions as genes. 2. The first two human chromosomes whose sequences were determined were chromosome ______ & ______. 3. Chromosome 21 contains about _______ genes, including one associated with amyotropic ...
study of cytological method and genetic
... settle the most basic question: how many chromosomes does a normal diploid human cell contain?[4] In 1912, Hans von Winiwarter reported 47 chromosomes in spermatogonia and 48 in oogonia, concluding an XX/XO sex determination mechanism.[5] Painter in 1922 was not certain whether the diploid number of ...
... settle the most basic question: how many chromosomes does a normal diploid human cell contain?[4] In 1912, Hans von Winiwarter reported 47 chromosomes in spermatogonia and 48 in oogonia, concluding an XX/XO sex determination mechanism.[5] Painter in 1922 was not certain whether the diploid number of ...
karyotypes - TeacherWeb
... chromosome. This is called _________. If a sperm that is missing a chromosome fertilizes an egg, then the resulting zygote will have only one copy of that chromosome. This is called __________. Missing pieces of chromosomes Cris du chat syndrome is caused by a _______________ on chromosome___. The c ...
... chromosome. This is called _________. If a sperm that is missing a chromosome fertilizes an egg, then the resulting zygote will have only one copy of that chromosome. This is called __________. Missing pieces of chromosomes Cris du chat syndrome is caused by a _______________ on chromosome___. The c ...
Meiosis
... will see that almost all the cells have the same number and types of chromosomes – Ex. Human cells contain the same types of 46 chromosomes – A display of the human 46 chromosomes is called ...
... will see that almost all the cells have the same number and types of chromosomes – Ex. Human cells contain the same types of 46 chromosomes – A display of the human 46 chromosomes is called ...
B chromosomes
... plant and animal species. They are dispensable, being found in some individuals in populations that carry them, and absent from others, which raises significant biological questions in terms of genome organisation, population cytogenetics and evolution. Bs were first discovered 100 years ago in an i ...
... plant and animal species. They are dispensable, being found in some individuals in populations that carry them, and absent from others, which raises significant biological questions in terms of genome organisation, population cytogenetics and evolution. Bs were first discovered 100 years ago in an i ...
Mutation Notes What is a MUTATION? Any change made to the DNA
... Any change made to the DNA Do all mutation cause a change in a trait? Not always, it depends on location of mutation and type Mutations can be inherited from parent to child or acquired due to environmental damage or mistakes in replication Mutations happen regulary and are usually nuetral . Many mu ...
... Any change made to the DNA Do all mutation cause a change in a trait? Not always, it depends on location of mutation and type Mutations can be inherited from parent to child or acquired due to environmental damage or mistakes in replication Mutations happen regulary and are usually nuetral . Many mu ...
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.