Sex chromosome
... What is the sex of an XY fly with 2 sets of autosomes? What is the sex of a fly with with 2 sets of autosomes but 1 X chromosome What is the sex of a triploid fly with 2 X chromosomes? ...
... What is the sex of an XY fly with 2 sets of autosomes? What is the sex of a fly with with 2 sets of autosomes but 1 X chromosome What is the sex of a triploid fly with 2 X chromosomes? ...
Thomas Hunt Morgan, 1933
... samples. Most grew just fine. The 299th one, however, would not grow unless supplemented. Many such experiments led to (among others) three mutants which needed certain amino acids in order to grow. The results of their experiments confirmed the idea that each mutation of a single gene affects a sin ...
... samples. Most grew just fine. The 299th one, however, would not grow unless supplemented. Many such experiments led to (among others) three mutants which needed certain amino acids in order to grow. The results of their experiments confirmed the idea that each mutation of a single gene affects a sin ...
Slide 1
... ** Significance of Mutations: Some have little to no effect on gene expression or protein function. (Example: a substitution that doesn’t change the amino acid). Harmful changes- disrupt normal activities (many related to cancer). Some are actually useful/beneficial (example- crop plants). ...
... ** Significance of Mutations: Some have little to no effect on gene expression or protein function. (Example: a substitution that doesn’t change the amino acid). Harmful changes- disrupt normal activities (many related to cancer). Some are actually useful/beneficial (example- crop plants). ...
Sex-linked Traits in Humans - Southington Public Schools
... Sex-linked Traits in Humans Because the sex chromosomes are a matched pair in females and an unmatched pair in males, traits on these genes show unusual patterns of inheritance. Traits that have their genes on the X chromosome are called X-linked traits. Recessive traits controlled by genes on the X ...
... Sex-linked Traits in Humans Because the sex chromosomes are a matched pair in females and an unmatched pair in males, traits on these genes show unusual patterns of inheritance. Traits that have their genes on the X chromosome are called X-linked traits. Recessive traits controlled by genes on the X ...
The Nucleus, Chromosomes and Genes
... Proteins are made from amino acids. There are about 20 of these. The exact order of amino acids in a protein decides what job it can do. ...
... Proteins are made from amino acids. There are about 20 of these. The exact order of amino acids in a protein decides what job it can do. ...
Slide 1
... • Cells which have the same X chromosome inactivated tend to group together in adult females, forming patches. • This means that different patches of the body will express different phenotypes. ...
... • Cells which have the same X chromosome inactivated tend to group together in adult females, forming patches. • This means that different patches of the body will express different phenotypes. ...
371_section quiz
... of the disorder. A carrier is a person who a. does not have the disorder but can pass it on to offspring. b. can develop the disorder later in life but cannot pass it on. c. has a dominant normal allele that has been inactivated. d. passes the disorder to offspring on the Y chromosome only. 4. Genes ...
... of the disorder. A carrier is a person who a. does not have the disorder but can pass it on to offspring. b. can develop the disorder later in life but cannot pass it on. c. has a dominant normal allele that has been inactivated. d. passes the disorder to offspring on the Y chromosome only. 4. Genes ...
Chapter 11 Chromosome Mutations
... are usually autopolyploids. They can result from a cross of a tetraploid with a diploid. Polyploids with odd numbers of chromosome sets are sterile, because their gametes are aneuploid. (Note that each chromosome is really a pair of chromatids). ...
... are usually autopolyploids. They can result from a cross of a tetraploid with a diploid. Polyploids with odd numbers of chromosome sets are sterile, because their gametes are aneuploid. (Note that each chromosome is really a pair of chromatids). ...
File - LC Biology 2012-2013
... In most normal cases the cells can repair this damage, but sometimes a mutation can occur Unprotected exposure to UV radiation by the human skin can lead to skin cancer and ...
... In most normal cases the cells can repair this damage, but sometimes a mutation can occur Unprotected exposure to UV radiation by the human skin can lead to skin cancer and ...
mutations ppt
... • Naturally occurring (they just happen) 2/3 of all cancers • Mutagen – something in the environment that causes a change • Examples: radiation (x-rays), pollution and toxic chemicals (Love Canal), smoking, diet, etc…. ...
... • Naturally occurring (they just happen) 2/3 of all cancers • Mutagen – something in the environment that causes a change • Examples: radiation (x-rays), pollution and toxic chemicals (Love Canal), smoking, diet, etc…. ...
(lectures 24
... a mystery. But we now know that these sticky ends are DNA helices, whose stickiness comes from a partially single-stranded stretch at the end. Telomeres, the ends of the chromosomes, are not sticky – we now know that they have a covalent bond across the end of the chromosome between the two helices. ...
... a mystery. But we now know that these sticky ends are DNA helices, whose stickiness comes from a partially single-stranded stretch at the end. Telomeres, the ends of the chromosomes, are not sticky – we now know that they have a covalent bond across the end of the chromosome between the two helices. ...
Meiosis - Answers - Iowa State University
... 5. What are homologous chromosomes? What does a loci have to do with them? Homologous chromosomes are two chromatids that code for the same genes - gene line up next to each other, are chromosome pairs of approximately the same length, centromere position, and staining pattern, with genes for the sa ...
... 5. What are homologous chromosomes? What does a loci have to do with them? Homologous chromosomes are two chromatids that code for the same genes - gene line up next to each other, are chromosome pairs of approximately the same length, centromere position, and staining pattern, with genes for the sa ...
Mitosis/Meiosis Modeling Lab Analysis Questions – Answer Key
... If a cell contains a set of duplicated chromosomes, does it contain any more genetic information than the cell before the chromosomes were duplicated? No. There is twice the amount of genetic material but no additional different genetic information. What is the significance of the fact that the chro ...
... If a cell contains a set of duplicated chromosomes, does it contain any more genetic information than the cell before the chromosomes were duplicated? No. There is twice the amount of genetic material but no additional different genetic information. What is the significance of the fact that the chro ...
3. Chromosome Defects
... caused by misrepair of broken chromosomes, improper recombination, or improper segregation of chromosomes during mitosis or meiosis Chromosome abnormalities can affect Germ cell (constitutional) Somatic cell 1. Variation in chromosome number polyploidy: extra sets of chromosomes 1-3% of huma ...
... caused by misrepair of broken chromosomes, improper recombination, or improper segregation of chromosomes during mitosis or meiosis Chromosome abnormalities can affect Germ cell (constitutional) Somatic cell 1. Variation in chromosome number polyploidy: extra sets of chromosomes 1-3% of huma ...
3. Chromosome Defects
... caused by misrepair of broken chromosomes, improper recombination, or improper segregation of chromosomes during mitosis or meiosis Chromosome abnormalities can affect Germ cell (constitutional) Somatic cell 1. Variation in chromosome number polyploidy: extra sets of chromosomes 1-3% of huma ...
... caused by misrepair of broken chromosomes, improper recombination, or improper segregation of chromosomes during mitosis or meiosis Chromosome abnormalities can affect Germ cell (constitutional) Somatic cell 1. Variation in chromosome number polyploidy: extra sets of chromosomes 1-3% of huma ...
Pedigrees and Chromosomal Abnormalities Notes (Genetics Test 2
... Try the challenge question on the next slide. To answer the question, review patterns of inheritance of X and Y chromosomes from father and mother to offspring. ...
... Try the challenge question on the next slide. To answer the question, review patterns of inheritance of X and Y chromosomes from father and mother to offspring. ...
BIO 112 Review - Crossword Labs
... 1. The phase of mitosis where the sister chromatids move to opposite poles 2. Protein structures on the centromere (where spindle fibers attach) 3. The entire genetic makeup of an organism 5. Diploid stage of a moss and a fern 6. The scientific study of heredity 7. Pollination between flowers on two ...
... 1. The phase of mitosis where the sister chromatids move to opposite poles 2. Protein structures on the centromere (where spindle fibers attach) 3. The entire genetic makeup of an organism 5. Diploid stage of a moss and a fern 6. The scientific study of heredity 7. Pollination between flowers on two ...
Chapter 15~ The Chromosomal Basis of Inheritance ______
... – Duchenne muscular dystropy (MD) – hemophilia X-inactivation: 2nd X chromosome in females condenses into a Barr body ...
... – Duchenne muscular dystropy (MD) – hemophilia X-inactivation: 2nd X chromosome in females condenses into a Barr body ...
The Cell Cycle and Meiosis Test
... 11. Make a chart comparing meiosis from mitosis (there should be at least 4 differences noted) ...
... 11. Make a chart comparing meiosis from mitosis (there should be at least 4 differences noted) ...
Chromosomal Disorders
... Chromosomal Disorders Chromosomal deletion: when cells go through meiosis, portions of the chromosome are lost. Chromosomal inversion: when cells go through meiosis, parts of the chromosome are flipped. Chromosomal translocation: when cells go through meiosis, parts of the chromosomes stick tog ...
... Chromosomal Disorders Chromosomal deletion: when cells go through meiosis, portions of the chromosome are lost. Chromosomal inversion: when cells go through meiosis, parts of the chromosome are flipped. Chromosomal translocation: when cells go through meiosis, parts of the chromosomes stick tog ...
Chromosomal Disorders
... Chromosomal Disorders Chromosomal deletion: when cells go through meiosis, portions of the chromosome are lost. Chromosomal inversion: when cells go through meiosis, parts of the chromosome are flipped. Chromosomal translocation: when cells go through meiosis, parts of the chromosomes stick tog ...
... Chromosomal Disorders Chromosomal deletion: when cells go through meiosis, portions of the chromosome are lost. Chromosomal inversion: when cells go through meiosis, parts of the chromosome are flipped. Chromosomal translocation: when cells go through meiosis, parts of the chromosomes stick tog ...
Show the cross between a white eyed male and
... • females can be carriers for the disease, where they pass the disease to their sons only Show the cross of a female who is a carrier and a normal male: ...
... • females can be carriers for the disease, where they pass the disease to their sons only Show the cross of a female who is a carrier and a normal male: ...