Markscheme
... In humans a V-shaped hair line is dominant to a straight hair line. A woman with a V-shaped hair line and a man [1 mark] with a straight hair line have children. The woman has a mother with a straight hair line. What is the proportion of children who are likely to have a V-shaped hair line? A. Half ...
... In humans a V-shaped hair line is dominant to a straight hair line. A woman with a V-shaped hair line and a man [1 mark] with a straight hair line have children. The woman has a mother with a straight hair line. What is the proportion of children who are likely to have a V-shaped hair line? A. Half ...
Document
... The phenotype of an organism 1. represents its genetic composition 2. reflects all the traits that are actually expressed 3. occurs only in dominant pure organisms 4. cannot be seen ...
... The phenotype of an organism 1. represents its genetic composition 2. reflects all the traits that are actually expressed 3. occurs only in dominant pure organisms 4. cannot be seen ...
I. Introduction
... 6. Mode of inheritance refers to whether a trait is dominant or recessive, autosomal or carried on a sex chromosome. 7. An autosomal condition is equally likely to affect either sex. 8. X-linked characteristics affect males much more than females. 9. Recessive conditions can skip a generation becaus ...
... 6. Mode of inheritance refers to whether a trait is dominant or recessive, autosomal or carried on a sex chromosome. 7. An autosomal condition is equally likely to affect either sex. 8. X-linked characteristics affect males much more than females. 9. Recessive conditions can skip a generation becaus ...
What is a GENE? - West East University
... The average mammal (including the human mammal) probably has somewhere between 30,000 - 60,000 genes comprising its genome (i.e., the complete genetic instructions for building and operating the organism itself). Is every copy of a particular gene exactly the same in every individual? (For example, ...
... The average mammal (including the human mammal) probably has somewhere between 30,000 - 60,000 genes comprising its genome (i.e., the complete genetic instructions for building and operating the organism itself). Is every copy of a particular gene exactly the same in every individual? (For example, ...
Cell fusion and somatic cell genetics
... expression are actually present and the amount is limited in a cell, and 2) the genecontrolling substances do not show species-specificity in function. The third advance was in human hereditary diseases. A genetic complementary test is possible using fusion of somatic cells. It has been confirmed th ...
... expression are actually present and the amount is limited in a cell, and 2) the genecontrolling substances do not show species-specificity in function. The third advance was in human hereditary diseases. A genetic complementary test is possible using fusion of somatic cells. It has been confirmed th ...
Nucleus Structure and Cell Cycle
... 2. Cytoplasmic division (cytokinesis) If it doesn’t happened, leads multinucleated cell. ...
... 2. Cytoplasmic division (cytokinesis) If it doesn’t happened, leads multinucleated cell. ...
Better check late than never: The chromosome segregation
... Aneuploidy is the result of errors in chromosome segregation and is manifested in two out of three cancers. The spindle assembly checkpoint (SAC) has evolved to prevent aneuploidy by inhibiting onset of anaphase until all chromosomes are properly aligned and attached. When the SAC is satisfied and c ...
... Aneuploidy is the result of errors in chromosome segregation and is manifested in two out of three cancers. The spindle assembly checkpoint (SAC) has evolved to prevent aneuploidy by inhibiting onset of anaphase until all chromosomes are properly aligned and attached. When the SAC is satisfied and c ...
MCDB 1041 Activity 4 Complex Patterns and Errors in Meiosis
... 2. You are presented with a patient who has Down syndrome (3 copies of chromosome 21). The mother was Bb for a gene of interest on chromosome 21; the father was BB. You know the nondisjunction event occurred in the mother. If the resulting genotype of the patient is BBb, when during meiosis did the ...
... 2. You are presented with a patient who has Down syndrome (3 copies of chromosome 21). The mother was Bb for a gene of interest on chromosome 21; the father was BB. You know the nondisjunction event occurred in the mother. If the resulting genotype of the patient is BBb, when during meiosis did the ...
Study Questions-II
... 1. In the 1940's, scientists knew that chromosomes consisted of DNA and protein. Given the great amount, and the diversity, of heritable information known to be passed from parent to offspring, most researchers thought that proteins must be the genetic material. Why do you think they thought that? ( ...
... 1. In the 1940's, scientists knew that chromosomes consisted of DNA and protein. Given the great amount, and the diversity, of heritable information known to be passed from parent to offspring, most researchers thought that proteins must be the genetic material. Why do you think they thought that? ( ...
Gene Expression and Mutation GENE EXPRESSION: There are
... information. Some examples are: 1. The two- colour pattern of some Siamese cats involves one hair-colour gene producing a temperature sensitive enzyme that produces a darker pigments on cooler areas of the body - tips of ears, tail, feet, snout. ...
... information. Some examples are: 1. The two- colour pattern of some Siamese cats involves one hair-colour gene producing a temperature sensitive enzyme that produces a darker pigments on cooler areas of the body - tips of ears, tail, feet, snout. ...
Genetic Disorders powerpoint
... common in a couple’s ethnic background or if there is a family history of the disease. • Examples of carrier tests include those for Tay-Sachs disease or sickle cell disease. ...
... common in a couple’s ethnic background or if there is a family history of the disease. • Examples of carrier tests include those for Tay-Sachs disease or sickle cell disease. ...
DNA Webquest - Jackson School District
... 3. Franklin worked with Raymond Gosling and was able to get photos of DNA fibers. What did she conclude from these photos (two things)? ______________________________________________________________________________ ______________________________________________________________________________ Go to ...
... 3. Franklin worked with Raymond Gosling and was able to get photos of DNA fibers. What did she conclude from these photos (two things)? ______________________________________________________________________________ ______________________________________________________________________________ Go to ...
Microsoft Word 97
... Female-Male Structural Differences .................................................................. Hormonal control of Reproductive Cycles .......................................................... The Fertilization Process ........................................................................ ...
... Female-Male Structural Differences .................................................................. Hormonal control of Reproductive Cycles .......................................................... The Fertilization Process ........................................................................ ...
Insect Genetics
... Any question that is not “fill in the blank” you need to write a complete sentence answer on another sheet of paper (on the back of the packet is fine). 1. What is your plan for studying? Which nights, what times, for how long, which lesson, how will you study? 2. What is heredity? 3. Explain the ro ...
... Any question that is not “fill in the blank” you need to write a complete sentence answer on another sheet of paper (on the back of the packet is fine). 1. What is your plan for studying? Which nights, what times, for how long, which lesson, how will you study? 2. What is heredity? 3. Explain the ro ...
Blending vs. particulate inheritance?
... “Independent segregation of each pair of alleles (i.e., genes coding for each character) during gamete formation.” ...
... “Independent segregation of each pair of alleles (i.e., genes coding for each character) during gamete formation.” ...
answers
... Each CODON in an m-RNA message is made of __3__ nucleotides. Each CODON in an m-RNA message represents __1____ amino acid. Which kind of RNA has an ANTICODON? __t-RNA____ What kind of molecules make up ribosomes? ___PROTEINS______ & ___r-RNA__________ Which cell part makes r-RNA? ___NUCLEOLUS__ Whic ...
... Each CODON in an m-RNA message is made of __3__ nucleotides. Each CODON in an m-RNA message represents __1____ amino acid. Which kind of RNA has an ANTICODON? __t-RNA____ What kind of molecules make up ribosomes? ___PROTEINS______ & ___r-RNA__________ Which cell part makes r-RNA? ___NUCLEOLUS__ Whic ...
AP Biology Review Chapters 13-14 Review Questions Chapter 12
... 2. Know and understand the three sets of experiments that point to DNA as the transforming factor (Griffith, Avery, and Hershey and Chase). 3. What are Chargoff’s rules? Know what they are and be able to apply them. 4. Who were ALL the researchers involved in figuring out the structure of DNA? Who t ...
... 2. Know and understand the three sets of experiments that point to DNA as the transforming factor (Griffith, Avery, and Hershey and Chase). 3. What are Chargoff’s rules? Know what they are and be able to apply them. 4. Who were ALL the researchers involved in figuring out the structure of DNA? Who t ...
- cK-12
... b) A cell that results from placing the nucleus into an egg cell. c) A somatic cell isolated from an organism. d) A gamete cell, such as a sperm or egg cell. ...
... b) A cell that results from placing the nucleus into an egg cell. c) A somatic cell isolated from an organism. d) A gamete cell, such as a sperm or egg cell. ...
Unit 1
... a. Negative…more b. Negative…less c. Positive…less d. Positive…more 10. Bacterial cells, but not eukaryotic cells, possess _____. a. Photosynthetic pigments b. A nucleoid with a circular chromosome c. Membrane-enclosed organelles d. Cell walls 11. Plasmids _____. a. Often contain antibiotic resistan ...
... a. Negative…more b. Negative…less c. Positive…less d. Positive…more 10. Bacterial cells, but not eukaryotic cells, possess _____. a. Photosynthetic pigments b. A nucleoid with a circular chromosome c. Membrane-enclosed organelles d. Cell walls 11. Plasmids _____. a. Often contain antibiotic resistan ...
e. dominant relationships
... Several recessive traits are carried on the X chromosomes; many cause abnormalities. ...
... Several recessive traits are carried on the X chromosomes; many cause abnormalities. ...
Biology is the only subject in which multiplication is the same thing
... use original parent strand as “template” add new matching bases synthesis enzyme = DNA polymerase ...
... use original parent strand as “template” add new matching bases synthesis enzyme = DNA polymerase ...
MT03
... individual that is homozygous recessive for the same genes. You have examined the test cross ratio obtained from a particular heterozygous individual and find it to be 1 wild type: 3 mutant. If the original heterozygous parent had been selfed or crossed to another individual of identical genotype wh ...
... individual that is homozygous recessive for the same genes. You have examined the test cross ratio obtained from a particular heterozygous individual and find it to be 1 wild type: 3 mutant. If the original heterozygous parent had been selfed or crossed to another individual of identical genotype wh ...
Spring Semester Exam Study Guide- Biology 2016 Complete this
... What part of the DNA strand does the diagram above represent? a. Nitrogen base c. Ribose sugar b. Phosphate d. Nucleotide What part of the DNA strand represents the deoxyribose sugar? a. A c. C b. B d. D The section of the DNA strand labeled “C” is known as a— a. Phosphate molecule c. Hydrogen bond ...
... What part of the DNA strand does the diagram above represent? a. Nitrogen base c. Ribose sugar b. Phosphate d. Nucleotide What part of the DNA strand represents the deoxyribose sugar? a. A c. C b. B d. D The section of the DNA strand labeled “C” is known as a— a. Phosphate molecule c. Hydrogen bond ...
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.