EXAM QUESTIONS PAPER 2 10 SEPTEMBER
... Given the following DNA strand, which of the following is its complementary mRNA? GGACTGATT A ...
... Given the following DNA strand, which of the following is its complementary mRNA? GGACTGATT A ...
Plant Cell Structure and Cell Processes
... 3. Muscle and nerve cells never divide, so they remain in G1 ...
... 3. Muscle and nerve cells never divide, so they remain in G1 ...
Ch 8-11 Review
... 1. Describe the structure of DNA. Be sure to include what forms the skeleton and how are the strands held together? 2. Compare and contrast chromosomes, chromatids, genes, and alleles. 3. Compare and contrast prokaryotic and eukaryotic cell division. 4. Describe the process of asexual reproduction i ...
... 1. Describe the structure of DNA. Be sure to include what forms the skeleton and how are the strands held together? 2. Compare and contrast chromosomes, chromatids, genes, and alleles. 3. Compare and contrast prokaryotic and eukaryotic cell division. 4. Describe the process of asexual reproduction i ...
1 The drawing shows the chromosomes in th~ nucleus of an
... Sufferers of beta thalassaemia have defective haemoglobin the protein of red blood cells that is responsible for transporting oxygen around the body. It mainly affects people of Mediterranean Oriental origins. It is characterised by severe anaemia and patients require frequent blood transfusions. Th ...
... Sufferers of beta thalassaemia have defective haemoglobin the protein of red blood cells that is responsible for transporting oxygen around the body. It mainly affects people of Mediterranean Oriental origins. It is characterised by severe anaemia and patients require frequent blood transfusions. Th ...
File - Ruggiero Science
... ____ 26. Which of the following statements is true? a. Females cannot have hemophilia. b. The father of a colorblind boy may be colorblind. c. A sex-linked allele cannot be dominant. d. The mother of a colorblind boy must be colorblind. ____ 27. Which of the following form(s) a Barr body? a. the Y ...
... ____ 26. Which of the following statements is true? a. Females cannot have hemophilia. b. The father of a colorblind boy may be colorblind. c. A sex-linked allele cannot be dominant. d. The mother of a colorblind boy must be colorblind. ____ 27. Which of the following form(s) a Barr body? a. the Y ...
10.2 Sexual Reproduction and Meiosis
... brothers and sisters share half of their genes. Identical twins have the same genetic makeup. Like fraternal twins, they are born on the same day. But that's where the similarity to fraternal twins ends. Identical twins are always the same sex. They will always be either two boys or two girls. The t ...
... brothers and sisters share half of their genes. Identical twins have the same genetic makeup. Like fraternal twins, they are born on the same day. But that's where the similarity to fraternal twins ends. Identical twins are always the same sex. They will always be either two boys or two girls. The t ...
Big_Idea_3_Multiple_Choice_Questions-2013-03
... c. Two haploid daughter cells d. Cancer cells 25. In some organisms, mitosis occurs without cytokinesis occurring. This will result in a. Cells with more than one nucleus b. Cells that are lacking nuclei c. Cells with an abnormal number of chromosomes d. Cells that are unusually large 26. Germ cells ...
... c. Two haploid daughter cells d. Cancer cells 25. In some organisms, mitosis occurs without cytokinesis occurring. This will result in a. Cells with more than one nucleus b. Cells that are lacking nuclei c. Cells with an abnormal number of chromosomes d. Cells that are unusually large 26. Germ cells ...
Turning Meiosis into Mitosis - IJPB
... generate daughter cells that are diploid and genetically identical to the initial cell. During meiosis, two rounds of chromosome segregation follow a single round of replication. At division one, homologous chromosomes recombine and are separated. Meiosis II is more similar to mitosis, resulting in ...
... generate daughter cells that are diploid and genetically identical to the initial cell. During meiosis, two rounds of chromosome segregation follow a single round of replication. At division one, homologous chromosomes recombine and are separated. Meiosis II is more similar to mitosis, resulting in ...
5` 3` 3` 5` w c A T coding or sense st template strand mRNA GA C GC
... Partitioning replicated chromosomes so that each daughter cell gets one copy of each chromosome The solution After replication of a chromosome… • hold the two sister chromatids together • target them to opposite poles • then separate the sisters ...
... Partitioning replicated chromosomes so that each daughter cell gets one copy of each chromosome The solution After replication of a chromosome… • hold the two sister chromatids together • target them to opposite poles • then separate the sisters ...
Heredity
... inherited trait of an individual can be determined by one or by many genes, and a singles gene can influence more than one trait. A human cell contains many thousands of different genes. ...
... inherited trait of an individual can be determined by one or by many genes, and a singles gene can influence more than one trait. A human cell contains many thousands of different genes. ...
Genetics SHOW
... 7) The recipe has the information to bring in specific AMINO ACIDS to build the needed protein. 8) When the RIBOSOME reads “stop” on the recipe (mRNA). The amino acids fold together to make the protein. The protein moves to the needed area in the body. ...
... 7) The recipe has the information to bring in specific AMINO ACIDS to build the needed protein. 8) When the RIBOSOME reads “stop” on the recipe (mRNA). The amino acids fold together to make the protein. The protein moves to the needed area in the body. ...
Cell Reproduction-
... • There are a series of steps after which 2 identical cells are formed, each with complete set of chromosomes. ...
... • There are a series of steps after which 2 identical cells are formed, each with complete set of chromosomes. ...
Genetics Lecture Part 2
... occurs between a large piece of chromosome 22 and a small piece on tip 9 = much shorter chromosome 22 (Philadelphia chromosome) in white blood cells IV. Some inheritance patterns are exceptions to the standard chromosome theory Normally occurring exceptions : sex of parent contributing an allele is ...
... occurs between a large piece of chromosome 22 and a small piece on tip 9 = much shorter chromosome 22 (Philadelphia chromosome) in white blood cells IV. Some inheritance patterns are exceptions to the standard chromosome theory Normally occurring exceptions : sex of parent contributing an allele is ...
The Cell Cycle
... (poles) of the cell forming spindle fibers. The spindle fibers are microtubules that will help the chromatids separate from each other. The spindle fibers arrays is called a mitotic spindle There are two types of spindle fibers Kinetochore fibers: attached to a disk shaped protein in the centr ...
... (poles) of the cell forming spindle fibers. The spindle fibers are microtubules that will help the chromatids separate from each other. The spindle fibers arrays is called a mitotic spindle There are two types of spindle fibers Kinetochore fibers: attached to a disk shaped protein in the centr ...
Chapter 11.2
... generation offspring (F1), only to show up in the second generation (F2) We know that all members of the F1 offspring are heterozygous (Aa) because one parent could only produce an A gamete and the other could produce only an a gamete ...
... generation offspring (F1), only to show up in the second generation (F2) We know that all members of the F1 offspring are heterozygous (Aa) because one parent could only produce an A gamete and the other could produce only an a gamete ...
Practice Problems1
... recessive flies to use in test crosses. He mates the two heterozygotes and throws away all but 8 eggs, claiming that he will get one female b b and one male b b from these eggs. (a) What is the probability that he will get exactly this? (b) What is the probability that he will be disappointed and fa ...
... recessive flies to use in test crosses. He mates the two heterozygotes and throws away all but 8 eggs, claiming that he will get one female b b and one male b b from these eggs. (a) What is the probability that he will get exactly this? (b) What is the probability that he will be disappointed and fa ...
Meiosis - Lemon Bay High School
... some viruses, contains DNA as the genetic material that houses the information to control cell structure and function. • A molecule of DNA is organized into units called genes; the products of gene expression direct the metabolic activity of cells. Copyright © 2009 Pearson Education, Inc. ...
... some viruses, contains DNA as the genetic material that houses the information to control cell structure and function. • A molecule of DNA is organized into units called genes; the products of gene expression direct the metabolic activity of cells. Copyright © 2009 Pearson Education, Inc. ...
Lecture 5
... Cell cycle begins with the formation of two cells from the division of a parent cell and ends when the daughter cell does so as well. Observable under the microscope, M phase consists of two events, mitosis (division of the nucleus) and cytokinesis (division of the cytoplasm). As replication of th ...
... Cell cycle begins with the formation of two cells from the division of a parent cell and ends when the daughter cell does so as well. Observable under the microscope, M phase consists of two events, mitosis (division of the nucleus) and cytokinesis (division of the cytoplasm). As replication of th ...
NAME
... heterozygous ( BB Bb bb ) _________________________ 5. Fill in the blanks below using these choices: dominant, genes, genetics, heterozygous, homozygous, recessive, chromosomes, Punnett Square. a. Chromosomes have chunks of nucleotides that determine traits. These parts are ________________. b. A pe ...
... heterozygous ( BB Bb bb ) _________________________ 5. Fill in the blanks below using these choices: dominant, genes, genetics, heterozygous, homozygous, recessive, chromosomes, Punnett Square. a. Chromosomes have chunks of nucleotides that determine traits. These parts are ________________. b. A pe ...
Lecture#18 - Chromosome Rearrangements
... 1 - Inviable gametes are meiotic products that are: - capable of forming sex cells - but when joining normal gametes -> unable to form a viable zygote (it is due to the unbalanced gamete). 2 - Translocations (and Inversions) result in reduced fertility due to inviable gametes. 3 - Only semi-sterile. ...
... 1 - Inviable gametes are meiotic products that are: - capable of forming sex cells - but when joining normal gametes -> unable to form a viable zygote (it is due to the unbalanced gamete). 2 - Translocations (and Inversions) result in reduced fertility due to inviable gametes. 3 - Only semi-sterile. ...
AIMS Review Packet
... 14. What is the purpose of Mitosis? 15. Why is it more accurate to call Mitosis nuclear division rather then cell division? 16. What types of cells in your body undergo Mitosis? 17. What is Cytokinesis? Mitosis/ Meiosis 1. How many cells are produced during mitosis? _____________ cells 2. Are diploi ...
... 14. What is the purpose of Mitosis? 15. Why is it more accurate to call Mitosis nuclear division rather then cell division? 16. What types of cells in your body undergo Mitosis? 17. What is Cytokinesis? Mitosis/ Meiosis 1. How many cells are produced during mitosis? _____________ cells 2. Are diploi ...
013368718X_CH04_047
... 16. The chromosomes line up across the center of the cell. 17. THINK VISUALLY The four circles below represent the nucleus of a cell going through mitosis. Draw four chromosomes as they go through each phase. Label each phase and describe what is happening to the DNA. ...
... 16. The chromosomes line up across the center of the cell. 17. THINK VISUALLY The four circles below represent the nucleus of a cell going through mitosis. Draw four chromosomes as they go through each phase. Label each phase and describe what is happening to the DNA. ...
14.1 ws - Woodstown.org
... two copies of many genes (located on X chromosomes) while males have just one. In females, most of the genes in one of the X chromosomes are inactivated in each cell. ...
... two copies of many genes (located on X chromosomes) while males have just one. In females, most of the genes in one of the X chromosomes are inactivated in each cell. ...
Meiosis
Meiosis /maɪˈoʊsɨs/ is a specialized type of cell division which reduces the chromosome number by half. This process occurs in all sexually reproducing single-celled and multi-celled eukaryotes, including animals, plants, and fungi. Errors in meiosis resulting in aneuploidy are the leading known cause of miscarriage and the most frequent genetic cause of developmental disabilities. In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells each with half the number of chromosomes as the original parent cell. The two meiotic divisions are known as meiosis I and meiosis II. Before meiosis begins, during S phase of the cell cycle, the DNA of each chromosome is replicated so that it consists of two identical sister chromatids. In meiosis I, homologous chromosomes pair with each other and can exchange genetic material in a process called chromosomal crossover. The homologous chromosomes are then segregated into two new daughter cells, each containing half the number of chromosomes as the parent cell. At the end of meiosis I, sister chromatids remain attached and may differ from one another if crossing-over occurred. In meiosis II, the two cells produced during meiosis I divide again. Sister chromatids segregate from one another to produce four total daughter cells. These cells can mature into various types of gametes such as ova, sperm, spores, or pollen.Because the number of chromosomes is halved during meiosis, gametes can fuse (i.e. fertilization) to form a zygote with a complete chromosome count containing a combination of paternal and maternal chromosomes. Thus, meiosis and fertilization facilitate sexual reproduction with successive generations maintaining the same number of chromosomes. For example, a typical diploid human cell contains 23 pairs of chromosomes (46 total, half of maternal origin and half of paternal origin). Meiosis produces haploid gametes with one set of 23 chromosomes. When two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes. This same pattern, but not the same number of chromosomes, occurs in all organisms that utilize meiosis. Thus, if a species has 30 chromosomes in its somatic cells, it will produce gametes with 15 chromosomes.