Karyotype and Pedigree Notes
... o Sex Chromosomal Disorders – improper number of either X or Y chromosomes. ______________ – males with one or more extra X chromosome (XXY). __________ ____________ - males with two Y chromosomes (XYY) Other Chromosomal Disorders o Another type of chromosomal disorder is chromosome ____________ ...
... o Sex Chromosomal Disorders – improper number of either X or Y chromosomes. ______________ – males with one or more extra X chromosome (XXY). __________ ____________ - males with two Y chromosomes (XYY) Other Chromosomal Disorders o Another type of chromosomal disorder is chromosome ____________ ...
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. ...
15.1 and 15.2 notes: -Law of segregation – Homologous
... Inheritance. That is, Mendelian genes have specific loci (locations), on chromosomes. This is how segregation and independent assortment can occur. Fig. 15.2. Idea of specific gene associated with specific chromosome came form Thomas Morgan – skeptical of Mendel’s ideas and chromosome theory. - Show ...
... Inheritance. That is, Mendelian genes have specific loci (locations), on chromosomes. This is how segregation and independent assortment can occur. Fig. 15.2. Idea of specific gene associated with specific chromosome came form Thomas Morgan – skeptical of Mendel’s ideas and chromosome theory. - Show ...
Genetics Somatic cells reproduce/divide using the process of MITOSIS
... • two parts of a double-stranded chromosome that have identical instructions ...
... • two parts of a double-stranded chromosome that have identical instructions ...
Mitosis
... The genetic code is contained in chromosomes in the nucleus of each cell. In animal body cells, chromosomes are generally found in pairs. All the genes and chromosomes from the parent cell must be copied and passed on to the daughter cells. Normally, a cell only contains one copy of each chromosome, ...
... The genetic code is contained in chromosomes in the nucleus of each cell. In animal body cells, chromosomes are generally found in pairs. All the genes and chromosomes from the parent cell must be copied and passed on to the daughter cells. Normally, a cell only contains one copy of each chromosome, ...
Chapter 28: Chromosomes
... – Boundary elements delimit areas of decompaction – Nucleosomes in the decompacted area unwind to allow initiation of transcription • Transcription factors (nonhistone proteins) unwind nucleosomes and dislodge histones at 5’ end of genes • Unwound portion is open to interaction with RNA polymerase w ...
... – Boundary elements delimit areas of decompaction – Nucleosomes in the decompacted area unwind to allow initiation of transcription • Transcription factors (nonhistone proteins) unwind nucleosomes and dislodge histones at 5’ end of genes • Unwound portion is open to interaction with RNA polymerase w ...
Introduction to the Cell Cycle and Inheritance
... – Mitosis – Meiosis • Before cytokinesis, replicated chromosomes must be distributed precisely into two new nuclei (daughter cells) – Mitosis produces two nuclei that contain the same genetic information as the original nucleus (clones) – Meiosis produces new nuclei with only half the number of chro ...
... – Mitosis – Meiosis • Before cytokinesis, replicated chromosomes must be distributed precisely into two new nuclei (daughter cells) – Mitosis produces two nuclei that contain the same genetic information as the original nucleus (clones) – Meiosis produces new nuclei with only half the number of chro ...
Reebop Lab - The Green Isle
... chromosomes from the envelopes. The “father” should lay the green chromosomes out on the desk from largest to smallest. The “mother” should do the same with the red chromosomes. You have just created a reebop karyotype. Karyotyping is a technique used to analyze the chromosomes of an individual. B) ...
... chromosomes from the envelopes. The “father” should lay the green chromosomes out on the desk from largest to smallest. The “mother” should do the same with the red chromosomes. You have just created a reebop karyotype. Karyotyping is a technique used to analyze the chromosomes of an individual. B) ...
Structure and Role of DNA Genetic and DNA Genetics
... o DNA- carries genetic information and contains instructions for cellular activity and protein production. o Nn Eukaryotes DNA is in nucleus in coiled structures(chromosomes) Prokaryotes DNA is attached to cell membrane or floats freely in the cytoplasm Endosymbiont theory- mitochondria and chloropl ...
... o DNA- carries genetic information and contains instructions for cellular activity and protein production. o Nn Eukaryotes DNA is in nucleus in coiled structures(chromosomes) Prokaryotes DNA is attached to cell membrane or floats freely in the cytoplasm Endosymbiont theory- mitochondria and chloropl ...
Ch. 13 Meiosis
... Crossing over occur (the exchange of sister chromatid material during synapsis) may occur only during this phase. The point of contact where two chromosomes are crossing-over is called Chiasmata. Longest phase of division. ...
... Crossing over occur (the exchange of sister chromatid material during synapsis) may occur only during this phase. The point of contact where two chromosomes are crossing-over is called Chiasmata. Longest phase of division. ...
Genes and Genetic Disease
... Somatic cell does not contain a multiple of 23 chromosomes 3 copies of one → trisomy (may survive) 1 copy only → monosomy (lethal) ...
... Somatic cell does not contain a multiple of 23 chromosomes 3 copies of one → trisomy (may survive) 1 copy only → monosomy (lethal) ...
Life Test #5review sheet answers2010
... to transfer genes from one organism to bacteria. To make things like the protein “insulin”. 12. What genetic engineering is used for to transfer genes from one organism to another. For example to transfer a red gene to a tomato to make it grow really red tomatoes. Look on my web page “ Selective bre ...
... to transfer genes from one organism to bacteria. To make things like the protein “insulin”. 12. What genetic engineering is used for to transfer genes from one organism to another. For example to transfer a red gene to a tomato to make it grow really red tomatoes. Look on my web page “ Selective bre ...
The Cell (including cell division)
... • DNA has replicated, but has not formed condensed structure of chromosome. They remain as loosely coiled chromatin; copies of chromatin remain attached to each other. • Centrosomes separate, act as areas of growth of 2 “spindles” which migrate toward opposite poles of cell. • Mitotic spindles (micr ...
... • DNA has replicated, but has not formed condensed structure of chromosome. They remain as loosely coiled chromatin; copies of chromatin remain attached to each other. • Centrosomes separate, act as areas of growth of 2 “spindles” which migrate toward opposite poles of cell. • Mitotic spindles (micr ...
Biology 1 Exam III F'04.doc
... 22) Genes located on the same chromosome are said to be: a) polygenic. b) bottlenecked. c) pleiotropic. d) linked. e) epistatic. 23) A human autosomal recessive lethal genetic disease whose defective allele has been maintained at a relatively high level in certain population groups because it gives ...
... 22) Genes located on the same chromosome are said to be: a) polygenic. b) bottlenecked. c) pleiotropic. d) linked. e) epistatic. 23) A human autosomal recessive lethal genetic disease whose defective allele has been maintained at a relatively high level in certain population groups because it gives ...
NAME
... a. Chromosomes have chunks of nucleotides that determine traits. These parts are ________________. b. A person having two genes that are alike is said to be _________________________. c. A gene that prevents others from showing is said to be ________________________. d. A gene that may not show up e ...
... a. Chromosomes have chunks of nucleotides that determine traits. These parts are ________________. b. A person having two genes that are alike is said to be _________________________. c. A gene that prevents others from showing is said to be ________________________. d. A gene that may not show up e ...
In meiosis, what is the difference between metaphase 1 and
... Growing stage, cell doubles everything in its cytoplasm and duplicates its chromosomal DNA ...
... Growing stage, cell doubles everything in its cytoplasm and duplicates its chromosomal DNA ...
Genetics 3 – Aneuploidies and Other Chromosome
... centromere: There are 3 main types of chromosome aberrations: • Structural – translocations, deletions, insertions, inversions, rings • Numerical – aneuploidy, loss or gain • Mosaicism – different cell lines Aberrations cause: - 60% of all early spontaneous miscarriages. - 4.5% of all still births ( ...
... centromere: There are 3 main types of chromosome aberrations: • Structural – translocations, deletions, insertions, inversions, rings • Numerical – aneuploidy, loss or gain • Mosaicism – different cell lines Aberrations cause: - 60% of all early spontaneous miscarriages. - 4.5% of all still births ( ...
Ans. Our cell contains 23 pairs of chromosome and it is inherited as
... Ans. Our cell contains 23 pairs of chromosome and it is inherited as one pair from each of our parents, which means that the sperm and egg receive 23 chromosomes through a complex process of cell division called as the meiosis. 2. Where is DNA found? Ans. Most of the DNA in a human cell is found in ...
... Ans. Our cell contains 23 pairs of chromosome and it is inherited as one pair from each of our parents, which means that the sperm and egg receive 23 chromosomes through a complex process of cell division called as the meiosis. 2. Where is DNA found? Ans. Most of the DNA in a human cell is found in ...
chromosomes.
... • Homologous= autosomes are homologues, meaning they are the same shape, size and carry the genes for the same traits. ...
... • Homologous= autosomes are homologues, meaning they are the same shape, size and carry the genes for the same traits. ...
Exam practice answers 8
... (b) (i) Chiasma/chiasmata (or crossover). (ii) Prophase of division 1. (iii) If the chiasma forms between non-sister chromatids, the alleles on homologous chromosomes can be exchanged. This produces new combinations of alleles in the gametes. New combinations of alleles mean that there is genetic va ...
... (b) (i) Chiasma/chiasmata (or crossover). (ii) Prophase of division 1. (iii) If the chiasma forms between non-sister chromatids, the alleles on homologous chromosomes can be exchanged. This produces new combinations of alleles in the gametes. New combinations of alleles mean that there is genetic va ...
SLO TEST CELLS 2 - Gallion-Wiki
... 16. Meiosis in human beings form cells that have a. 23 chromosomes b. 26 chromosomes c. 46 chromosomes d. 50 chromosomes 17. When an egg and a sperm cell unite to form a single cell, this is called a. asexual reproduction b. fertilization c. respiration d. mitosis 18. Which is an NOT an example of ...
... 16. Meiosis in human beings form cells that have a. 23 chromosomes b. 26 chromosomes c. 46 chromosomes d. 50 chromosomes 17. When an egg and a sperm cell unite to form a single cell, this is called a. asexual reproduction b. fertilization c. respiration d. mitosis 18. Which is an NOT an example of ...
HSproteinsynth
... ·The DNA strand in E. coli contains about 4 million base pairs, and these base pairs are organized into about 1,000 genes. A gene is simply a template for a protein, and often these proteins are enzymes. ...
... ·The DNA strand in E. coli contains about 4 million base pairs, and these base pairs are organized into about 1,000 genes. A gene is simply a template for a protein, and often these proteins are enzymes. ...
Meiosis
... Asexual reproduction – 1 parent ….identical offspring (clones) *single celled eukaryotes…..yeast, paramecium, amoeba ...
... Asexual reproduction – 1 parent ….identical offspring (clones) *single celled eukaryotes…..yeast, paramecium, amoeba ...
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.