![3.1 Chromosome Number in Different Species](http://s1.studyres.com/store/data/014732459_1-44127f0adcc9e3c4228f8681cc054b27-300x300.png)
3.1 Chromosome Number in Different Species
... Breeding between the two species produces an allodiploid F1 generation in which 2n = 18 (but actually is 9 + 9, since the chromosomes are not homologous). But if somatic doubling (i.e. nondisjunction) occurs in a meristematic cell. Result: 2n = 36. In effect, each parental chromosome set has "create ...
... Breeding between the two species produces an allodiploid F1 generation in which 2n = 18 (but actually is 9 + 9, since the chromosomes are not homologous). But if somatic doubling (i.e. nondisjunction) occurs in a meristematic cell. Result: 2n = 36. In effect, each parental chromosome set has "create ...
Chromosomes Notes Review
... 21. A section of DNA that provides information for a particular protein 22. The sex chromosomes that are only found in males For the following questions, determine which term below correctly matches. Some answers may have more than one answer. Autosomes Sex Chromosome 23. Determines the gender of th ...
... 21. A section of DNA that provides information for a particular protein 22. The sex chromosomes that are only found in males For the following questions, determine which term below correctly matches. Some answers may have more than one answer. Autosomes Sex Chromosome 23. Determines the gender of th ...
Notes: Chromosomes and Meiosis Gametes have half the number of
... • Are sex cells like sperm and egg • DNA in these cells ARE passed on to offspring ...
... • Are sex cells like sperm and egg • DNA in these cells ARE passed on to offspring ...
MENDEL AND MEIOSIS NOTES
... Cytoplasm divides to yield two new cells Cell is still at 2n, because of the replication of DNA ...
... Cytoplasm divides to yield two new cells Cell is still at 2n, because of the replication of DNA ...
3. fused spleen and tumor cells.
... 3. fused spleen and tumor cells. 5. The existence of more than one form of a genetic trait. 8. An enzyme found in high concentrations in semen. 9. The liquid that separates from the blood when a clot is formed. 11. The absence of sperm. 13. The basic unit of heredity, consisting of a DNA segment loc ...
... 3. fused spleen and tumor cells. 5. The existence of more than one form of a genetic trait. 8. An enzyme found in high concentrations in semen. 9. The liquid that separates from the blood when a clot is formed. 11. The absence of sperm. 13. The basic unit of heredity, consisting of a DNA segment loc ...
Chromosomes
... who worked with pea plants. Replaced Blending Theory with Particulate Theory of Inheritance. ...
... who worked with pea plants. Replaced Blending Theory with Particulate Theory of Inheritance. ...
Patterns of Heredity - Bishop Ireton High School
... neurological disease that appears after age 35-become incapacitated. Loss of muscle and motor control. ...
... neurological disease that appears after age 35-become incapacitated. Loss of muscle and motor control. ...
Meiosis
... shared – occurs in Prophase I Random Fertilization – sperm? So, possible combinations is squared (223 x 223 = 64 trillion) So???? Evolution………. ...
... shared – occurs in Prophase I Random Fertilization – sperm? So, possible combinations is squared (223 x 223 = 64 trillion) So???? Evolution………. ...
Name: Date: Period: _____ Questions 5. This fill-in-the
... 2. DNA is wound tightly into compact chromosomes (each with two sister _______________). These compact chromosomes are easier to move than the long thin chromosomes in a cell which is not undergoing cell division. Spindle fibers which will move the chromosomes begin to form. 3. Spindle fibers attach ...
... 2. DNA is wound tightly into compact chromosomes (each with two sister _______________). These compact chromosomes are easier to move than the long thin chromosomes in a cell which is not undergoing cell division. Spindle fibers which will move the chromosomes begin to form. 3. Spindle fibers attach ...
FinalExamStudyGuideSemester1
... 3) What are gametes? What type of cellular division makes them? 4) What type of cellular division are sperm and eggs made from? 5) Which organ is responsible for making sperm in men? 6) Which organ is responsible for making and storing eggs in women? 7) What are the possible gametes from the followi ...
... 3) What are gametes? What type of cellular division makes them? 4) What type of cellular division are sperm and eggs made from? 5) Which organ is responsible for making sperm in men? 6) Which organ is responsible for making and storing eggs in women? 7) What are the possible gametes from the followi ...
What is DNA?
... by which DNA duplicate in order to form two identical cells • Cells need to reproduce to create new cells for growth, repair of tissue, (healing) and to produce other things our body needs. • Why do the body cells have to be identical? ...
... by which DNA duplicate in order to form two identical cells • Cells need to reproduce to create new cells for growth, repair of tissue, (healing) and to produce other things our body needs. • Why do the body cells have to be identical? ...
INVESTIGATIVE SCIENCE
... Mr. Pomerantz__________________________________________________________________Page 2 of 2 3. Describe the difference between anaphase of mitosis and anaphase I of meiosis. Use the terms “chromosomes” and ...
... Mr. Pomerantz__________________________________________________________________Page 2 of 2 3. Describe the difference between anaphase of mitosis and anaphase I of meiosis. Use the terms “chromosomes” and ...
From Mendel to Human Genome
... RR = can roll tongue Rr = can roll tongue rr = can’t roll tongue ...
... RR = can roll tongue Rr = can roll tongue rr = can’t roll tongue ...
013368718X_CH11_159-178.indd
... During meiosis, haploid gametes are produced from diploid cells. At the end of meiosis, the number of chromosomes in gametes is half the number of chromosomes in body cells. Look at the diagrams below. Then use the words in the box to label the phases shown in the diagrams. ...
... During meiosis, haploid gametes are produced from diploid cells. At the end of meiosis, the number of chromosomes in gametes is half the number of chromosomes in body cells. Look at the diagrams below. Then use the words in the box to label the phases shown in the diagrams. ...
PSY236 -‐ Biopsychology and Learning
... Meiosis is a two-‐stage process of cell division that results in four haploid cells, each with half the number of chromosomes as the original parent cell. These mature into reproductive cells (gametes), ...
... Meiosis is a two-‐stage process of cell division that results in four haploid cells, each with half the number of chromosomes as the original parent cell. These mature into reproductive cells (gametes), ...
Chromosomes and Cell Reproduction Notes
... (*this is after replication but before cell division) B. Chromatid- each copy of the DNA on a chromosome C. Centromere- place where the chromatids attach to make a chromosome D. Genes- Segments of DNA on a chromosome that code for a specific protein/trait A. ...
... (*this is after replication but before cell division) B. Chromatid- each copy of the DNA on a chromosome C. Centromere- place where the chromatids attach to make a chromosome D. Genes- Segments of DNA on a chromosome that code for a specific protein/trait A. ...
Polygenic Traits
... • Polyploidy: multiple sets of chromosomes. • Monoploidy: one set only. – Haploid means half, not one. If normal is tetraploid (4), then haploid is diploid! • Polyploids are common in agricultural crops – Contain larger cells, larger produce, more vigorous growth. Even numbers of sets are best. • Tr ...
... • Polyploidy: multiple sets of chromosomes. • Monoploidy: one set only. – Haploid means half, not one. If normal is tetraploid (4), then haploid is diploid! • Polyploids are common in agricultural crops – Contain larger cells, larger produce, more vigorous growth. Even numbers of sets are best. • Tr ...
Answered copy of exam 3 (white)
... for pericentric inversions and T for translocations, tell which is/are associated with the following: (In some cases D or A were accepted, but the following were expected:) D (D) Pa, Pi, T ...
... for pericentric inversions and T for translocations, tell which is/are associated with the following: (In some cases D or A were accepted, but the following were expected:) D (D) Pa, Pi, T ...
Lecture #6 Date - Simon Technology
... Alterations of chromosomal structure: Deletion: removal of a chromosomal segment Duplication: repeats a chromosomal segment Inversion: segment reversal in a chromosome Translocation: movement of a chromosomal segment to another ...
... Alterations of chromosomal structure: Deletion: removal of a chromosomal segment Duplication: repeats a chromosomal segment Inversion: segment reversal in a chromosome Translocation: movement of a chromosomal segment to another ...
Biology 12: Comparing Mitosis and Meiosis
... make short jot notes discussing any important differences, similarities or events occurring in each process. Please note that yes or no answers are not appropriate. CHARACTERISTIC Importance of process in the life cycle of a cell/organism ...
... make short jot notes discussing any important differences, similarities or events occurring in each process. Please note that yes or no answers are not appropriate. CHARACTERISTIC Importance of process in the life cycle of a cell/organism ...
Genetics Lecture Part 2
... III. Alterations of chromosome number or structure cause some genetic disorders A. Abnormal Chromosome Number a. Meiotic nondisjunction (can occur on mitosis: so a tissue may have this ) a. Aneuploidy (wrong numberof chromosomes) b. Monosomic (2n-1) c. Trisomic (2n+1) d. Polyploidy ( more than 2 com ...
... III. Alterations of chromosome number or structure cause some genetic disorders A. Abnormal Chromosome Number a. Meiotic nondisjunction (can occur on mitosis: so a tissue may have this ) a. Aneuploidy (wrong numberof chromosomes) b. Monosomic (2n-1) c. Trisomic (2n+1) d. Polyploidy ( more than 2 com ...
Polyploid
Polyploid cells and organisms are those containing more than two paired (homologous) sets of chromosomes. Most species whose cells have nuclei (Eukaryotes) are diploid, meaning they have two sets of chromosomes—one set inherited from each parent. However, polyploidy is found in some organisms and is especially common in plants. In addition, polyploidy occurs in some tissues of animals that are otherwise diploid, such as human muscle tissues. This is known as endopolyploidy. Species whose cells do not have nuclei, that is, Prokaryotes, may be polyploid organisms, as seen in the large bacterium Epulopicium fishelsoni [1]. Hence ploidy is defined with respect to a cell. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Male bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores by meiosis.Polyploidy refers to a numerical change in a whole set of chromosomes. Organisms in which a particular chromosome, or chromosome segment, is under- or overrepresented are said to be aneuploid (from the Greek words meaning ""not"", ""good"", and ""fold""). Therefore the distinction between aneuploidy and polyploidy is that aneuploidy refers to a numerical change in part of the chromosome set, whereas polyploidy refers to a numerical change in the whole set of chromosomes.Polyploidy may occur due to abnormal cell division, either during mitosis, or commonly during metaphase I in meiosis.Polyploidy occurs in some animals, such as goldfish, salmon, and salamanders, but is especially common among ferns and flowering plants (see Hibiscus rosa-sinensis), including both wild and cultivated species. Wheat, for example, after millennia of hybridization and modification by humans, has strains that are diploid (two sets of chromosomes), tetraploid (four sets of chromosomes) with the common name of durum or macaroni wheat, and hexaploid (six sets of chromosomes) with the common name of bread wheat. Many agriculturally important plants of the genus Brassica are also tetraploids.Polyploidy can be induced in plants and cell cultures by some chemicals: the best known is colchicine, which can result in chromosome doubling, though its use may have other less obvious consequences as well. Oryzalin will also double the existing chromosome content.