geneticinheritance
... Have male & female gametes (sex cells) Male & female same flower Know what pollination & fertilization mean He could control the fertilization process Not many traits to keep track of ...
... Have male & female gametes (sex cells) Male & female same flower Know what pollination & fertilization mean He could control the fertilization process Not many traits to keep track of ...
PLANT REPRODUCTION AND HOW IT WORKS!
... • Seed – A structure that carries the embryo of a plant (after fertilization) ...
... • Seed – A structure that carries the embryo of a plant (after fertilization) ...
Basics of Chromosomes
... Haemoglobin is made up of 4 polypeptide chains, 2 alpha and 2 beta. Normal red blood cells are flexible and donut shaped (binoconcave). This allows them to carry four O2 molecules per RBC. They are said to have Hb, which is regular. Sickle Cell is a base substitution in the gene coding for the 6th a ...
... Haemoglobin is made up of 4 polypeptide chains, 2 alpha and 2 beta. Normal red blood cells are flexible and donut shaped (binoconcave). This allows them to carry four O2 molecules per RBC. They are said to have Hb, which is regular. Sickle Cell is a base substitution in the gene coding for the 6th a ...
The Cell Cycle
... two pairs of 23 different chromosomes for a total of 46 chromosomes. The 23 pairs of chromosomes differ in size, shape, and genetic content. Each pair consists of two homologous chromosomes or homologues (one from each ...
... two pairs of 23 different chromosomes for a total of 46 chromosomes. The 23 pairs of chromosomes differ in size, shape, and genetic content. Each pair consists of two homologous chromosomes or homologues (one from each ...
Sex chromosome
... the X and Y •~12 genes on X and Y •regions allow X and Y to pair during meiosis •pseudoautosomal genes are also transcribed from the inactivated X! •both males and females have 2 active copies of these genes ...
... the X and Y •~12 genes on X and Y •regions allow X and Y to pair during meiosis •pseudoautosomal genes are also transcribed from the inactivated X! •both males and females have 2 active copies of these genes ...
Chapter 13 Presentation-Meiosis and Chromosomes
... The only two chromosomes that don’t really fit the idea of being homologous are the sex chromosomes, the X and the Y. The two sets of genes on these chromosomes are more different than they are alike. They determine the sex of the individual: XX-female; XY-male ...
... The only two chromosomes that don’t really fit the idea of being homologous are the sex chromosomes, the X and the Y. The two sets of genes on these chromosomes are more different than they are alike. They determine the sex of the individual: XX-female; XY-male ...
IB Biology 11 SL (H) - Anoka
... ● How genetic information is transmitted from parents to offspring through the processes of meiosis and translation, using the example of sickle-cell anemia fertilization as they relate to chromosome recombination and sexual reproduction ● State that meiosis is a reduction division of a diploid nucl ...
... ● How genetic information is transmitted from parents to offspring through the processes of meiosis and translation, using the example of sickle-cell anemia fertilization as they relate to chromosome recombination and sexual reproduction ● State that meiosis is a reduction division of a diploid nucl ...
Meiosis
... material between homologous chromosomes – Nonsister chromatids join at a chiasma (plural, chiasmata), the site of attachment and crossing over – Corresponding amounts of genetic material are exchanged between maternal and paternal (nonsister) chromatids ...
... material between homologous chromosomes – Nonsister chromatids join at a chiasma (plural, chiasmata), the site of attachment and crossing over – Corresponding amounts of genetic material are exchanged between maternal and paternal (nonsister) chromatids ...
STAAR Review Part I
... Heterozygous- a genotype in which there is a dominant and recessive trait EX: Bb Homozygous Dominant- a genotype in which you receive a dominant trait from both parents. ...
... Heterozygous- a genotype in which there is a dominant and recessive trait EX: Bb Homozygous Dominant- a genotype in which you receive a dominant trait from both parents. ...
Lesson Plans for Fred Hopson, 010
... discusion/ meiosis Power point (power model of meiosis in order to show their point is on line) we will finish the power understanding of the topic. point on meiosis as an intro to gamete production. Procedures: warm up/ begin meiosis project (claymation) the students will work Accommodations/Modifi ...
... discusion/ meiosis Power point (power model of meiosis in order to show their point is on line) we will finish the power understanding of the topic. point on meiosis as an intro to gamete production. Procedures: warm up/ begin meiosis project (claymation) the students will work Accommodations/Modifi ...
Study Guide for Ch 5 (sec 3) and Ch 6
... 23. If a scientist is looking to choose a specific mate for an organism to produce a desirable trait, what is this process called? Selective breeding 24. If you were the carrier of a genetic disease, how could genetic counseling help you prepare for the future? Genetic counseling could help to prepa ...
... 23. If a scientist is looking to choose a specific mate for an organism to produce a desirable trait, what is this process called? Selective breeding 24. If you were the carrier of a genetic disease, how could genetic counseling help you prepare for the future? Genetic counseling could help to prepa ...
File - Mr. Obiechefu`s Life Science
... 23. If a scientist is looking to choose a specific mate for an organism to produce a desirable trait, what is this process called? Selective breeding 24. If you were the carrier of a genetic disease, how could genetic counseling help you prepare for the future? Genetic counseling could help to prepa ...
... 23. If a scientist is looking to choose a specific mate for an organism to produce a desirable trait, what is this process called? Selective breeding 24. If you were the carrier of a genetic disease, how could genetic counseling help you prepare for the future? Genetic counseling could help to prepa ...
Mitosis and Cell Division
... • Decondensed chromosome- chromatin • After copying, chromosome consists of two sister chromatids, joined at the centromere • Kinetochore – proteins found on surface of centromere ...
... • Decondensed chromosome- chromatin • After copying, chromosome consists of two sister chromatids, joined at the centromere • Kinetochore – proteins found on surface of centromere ...
Document
... All cells come from other cells Eukaryotic cells that go through the process of mitosis make EXACT copies of themselves (one skin cell divides to form two identical skin cells, etc.) Sex cells (sperm and egg cells) are different from all other cells in the body because they have half as many chromos ...
... All cells come from other cells Eukaryotic cells that go through the process of mitosis make EXACT copies of themselves (one skin cell divides to form two identical skin cells, etc.) Sex cells (sperm and egg cells) are different from all other cells in the body because they have half as many chromos ...
The Chromosomes of a Frimpanzee: An
... With your models folded, you are looking at chromatids, not chromosomes. A chromosome is actually two identical chromatids joined together at the center by a structure called the centromere. Before mitosis or meiosis can occur, the DNA making up the chromatid must be copied. This happens during a ph ...
... With your models folded, you are looking at chromatids, not chromosomes. A chromosome is actually two identical chromatids joined together at the center by a structure called the centromere. Before mitosis or meiosis can occur, the DNA making up the chromatid must be copied. This happens during a ph ...
Key - Chapter 6 Reading Assignment 0910
... 6. Describe what is meant by the term ‘gamete.’ An organisms reproductive cells such as sperm and eggs 7. As a review, turn to pg. 37 in chapter 2. What type of organic compound is DNA? Nucleic acid It contains a ribose , which is a sugar made of five carbons, a base that contains nitrogen and a ph ...
... 6. Describe what is meant by the term ‘gamete.’ An organisms reproductive cells such as sperm and eggs 7. As a review, turn to pg. 37 in chapter 2. What type of organic compound is DNA? Nucleic acid It contains a ribose , which is a sugar made of five carbons, a base that contains nitrogen and a ph ...
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 ...
Cell Division
... duplicated G2 – centrioles and other organelles required for cell division are made Mitosis – the duplicated chromosomes separate, has four phases Cytokinesis – the cell physically splits in two ...
... duplicated G2 – centrioles and other organelles required for cell division are made Mitosis – the duplicated chromosomes separate, has four phases Cytokinesis – the cell physically splits in two ...
The Cell Cycle
... • SPI 0707.1.4 Sequence a series of diagrams that depict chromosome movement during plant cell division. ...
... • SPI 0707.1.4 Sequence a series of diagrams that depict chromosome movement during plant cell division. ...
The Cell Cycle - Ms. Porter's 7th Grade Science Class
... • SPI 0707.1.4 Sequence a series of diagrams that depict chromosome movement during plant cell division. ...
... • SPI 0707.1.4 Sequence a series of diagrams that depict chromosome movement during plant cell division. ...
Meiosis I
... Covered in this presentation was the cell cycle in detail. It was learned that the steps within this cycle are: • G1 phase - energy consuming process. • S phase - DNA duplication. • G2 Phase - growth and energy synthesis. • Mitosis - equal division of DNA. • Prophase - 2 centrosome move to opposite ...
... Covered in this presentation was the cell cycle in detail. It was learned that the steps within this cycle are: • G1 phase - energy consuming process. • S phase - DNA duplication. • G2 Phase - growth and energy synthesis. • Mitosis - equal division of DNA. • Prophase - 2 centrosome move to opposite ...
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.