EXAM EXPECTATIONS MYP Biology
... STATE that cell division is necessary for proper development STATE that cell division is the basis for both sexual and asexual reproduction STATE that cell division can produce an entirely new organism STATE that cell division is necessary to continue life STATE the role of centromeres STATE that as ...
... STATE that cell division is necessary for proper development STATE that cell division is the basis for both sexual and asexual reproduction STATE that cell division can produce an entirely new organism STATE that cell division is necessary to continue life STATE the role of centromeres STATE that as ...
Making Reebops: a model for meiosis
... Reebops are imagined animals, made from marshmallows, pins and cocktail sticks. They have 16 chromosomes (in 8 homologous pairs) in their body cells. It is important that you understand what happens to form the gametes or sex cells. Have a look at the parents – Mum and Dad Reebop. Note their charact ...
... Reebops are imagined animals, made from marshmallows, pins and cocktail sticks. They have 16 chromosomes (in 8 homologous pairs) in their body cells. It is important that you understand what happens to form the gametes or sex cells. Have a look at the parents – Mum and Dad Reebop. Note their charact ...
Mitosis
... sperm cells. This is necessary for sexual reproduction. M M • Visually, meiosis resembles mitosis (phases: P.M.A.T.) but twice! • Prophase I, Metaphase I, Anaphase I, Telophase I • Prophase II, Metaphase II, Anaphase II, Telophase II ...
... sperm cells. This is necessary for sexual reproduction. M M • Visually, meiosis resembles mitosis (phases: P.M.A.T.) but twice! • Prophase I, Metaphase I, Anaphase I, Telophase I • Prophase II, Metaphase II, Anaphase II, Telophase II ...
Chapter 11 Notes Section 1 Gregor Mendel`s Peas Genetics is the
... D The sister chromatids separate and move toward opposite ends of the cell. E Meiosis II results in four haploid (N) daughter cells ...
... D The sister chromatids separate and move toward opposite ends of the cell. E Meiosis II results in four haploid (N) daughter cells ...
1.5.1 Mitosis HW
... 2. Why is DNA so important in cellular reproduction? How is DNA organized in cells? ...
... 2. Why is DNA so important in cellular reproduction? How is DNA organized in cells? ...
Block I Study questions
... How are sex chromosomes made? In meiosis for humans, how many total chromosomes are produced in all 4 sex cells? 5) If long tails are a sex-linked trait, and mostly males have it, on which chromosome will it most likely be on? 6) Is colorblindness recessive, dominant or the result of incomplete domi ...
... How are sex chromosomes made? In meiosis for humans, how many total chromosomes are produced in all 4 sex cells? 5) If long tails are a sex-linked trait, and mostly males have it, on which chromosome will it most likely be on? 6) Is colorblindness recessive, dominant or the result of incomplete domi ...
Crossing Over during Meiosis
... pairs will lead (eventually) to gene maps of each chromosome. • Pair-wise and three-locus linkage associations can be formed. • The frequencies of recombination can also be used to estimate the physical distance between loci along a chromosome. • The values for recombination frequency can be conside ...
... pairs will lead (eventually) to gene maps of each chromosome. • Pair-wise and three-locus linkage associations can be formed. • The frequencies of recombination can also be used to estimate the physical distance between loci along a chromosome. • The values for recombination frequency can be conside ...
Cell Processes Study Guide OL Answer Key
... 4. Draw each step of the cell cycle and explain what is occurring at each phase. ...
... 4. Draw each step of the cell cycle and explain what is occurring at each phase. ...
SBI 3UI Outline for Exam
... Controlled Experiments – Testable Question, Variables, Hypothesis, Experimental Design, Experiment and Materials, Procedure, Observations, Analyze and Evaluate, Apply and Extend, Reporting on the Investigation. Define all terms related to scientific inquiry. These terms include: controlled experimen ...
... Controlled Experiments – Testable Question, Variables, Hypothesis, Experimental Design, Experiment and Materials, Procedure, Observations, Analyze and Evaluate, Apply and Extend, Reporting on the Investigation. Define all terms related to scientific inquiry. These terms include: controlled experimen ...
Chapter 6 - River Ridge #210
... and carries out its routine functions. Cells that are not dividing remain in the G1 phase. 4. Synthesis (S) phase- A cell’s DNA is copied during this phase. At the end of this phase, each chromosome consists of two chromatids attached at the centromere. ...
... and carries out its routine functions. Cells that are not dividing remain in the G1 phase. 4. Synthesis (S) phase- A cell’s DNA is copied during this phase. At the end of this phase, each chromosome consists of two chromatids attached at the centromere. ...
Chapter 6- Chromosomes and Cell Reproduction
... and carries out its routine functions. Cells that are not dividing remain in the G1 phase. ...
... and carries out its routine functions. Cells that are not dividing remain in the G1 phase. ...
Chapter 10 - Spokane Public Schools
... 14. Homologous Chromosomes – In body cells the chromosomes exist in equivalent (equal) pairs. This is called homologous. The pairs of chromosomes match each other, one from each parent. Sex cells are not homologous. They contain only a single chromosome from each of the homologous pairs. (202) 15. ...
... 14. Homologous Chromosomes – In body cells the chromosomes exist in equivalent (equal) pairs. This is called homologous. The pairs of chromosomes match each other, one from each parent. Sex cells are not homologous. They contain only a single chromosome from each of the homologous pairs. (202) 15. ...
Genetics
... Inheritance of Single genes Equal segregation of alleles during meiosis In meiosis, each of the four haploid products receives one of each kind of chromosome A/A homozygotes all get A chromosomes A/a heterozygotes half get A chromosomes-half get a chromosomes So…. alleles of heterozygotes segreg ...
... Inheritance of Single genes Equal segregation of alleles during meiosis In meiosis, each of the four haploid products receives one of each kind of chromosome A/A homozygotes all get A chromosomes A/a heterozygotes half get A chromosomes-half get a chromosomes So…. alleles of heterozygotes segreg ...
Genetics - Mr. Mazza's BioResource
... • When gametes are made, they receive only one chromosome from each homologous pair, making haploid cells (have half the number of chromosomes as the original cell) • Chromosomes are distributed to gametes randomly resulting in different combinations of chromosomes (called independent assortment) ...
... • When gametes are made, they receive only one chromosome from each homologous pair, making haploid cells (have half the number of chromosomes as the original cell) • Chromosomes are distributed to gametes randomly resulting in different combinations of chromosomes (called independent assortment) ...
GENETIC DISORDERS
... pauses in Meiosis I before the cells (primary oocyte) divide. • The meiotic process resumes at puberty with ovulation (and fertilization), for 1 cell (ovum) every month. ...
... pauses in Meiosis I before the cells (primary oocyte) divide. • The meiotic process resumes at puberty with ovulation (and fertilization), for 1 cell (ovum) every month. ...
Name
... 11. ______The structure that moves to each pole of the cell during mitosis is called a) cell membrane ...
... 11. ______The structure that moves to each pole of the cell during mitosis is called a) cell membrane ...
THE CHROMOSOMAL BASIS OF INHERITANCE
... duplications, etc.) can cause genetic disorders. • How genetic imprinting and inheritance of mitochondrial DNA are exceptions to standard ...
... duplications, etc.) can cause genetic disorders. • How genetic imprinting and inheritance of mitochondrial DNA are exceptions to standard ...
Lecture Outline
... Closer look at prophase I Leptotene Sister chromatids of each chromosome associate tightly with each other (chromosomes appear as single threads) Telomeres attach to nuclear envelope Zygotene Homologous chromosomes begin pairing but remain ~300 nm apart (called “rough pairing”) Synaptonemal complex ...
... Closer look at prophase I Leptotene Sister chromatids of each chromosome associate tightly with each other (chromosomes appear as single threads) Telomeres attach to nuclear envelope Zygotene Homologous chromosomes begin pairing but remain ~300 nm apart (called “rough pairing”) Synaptonemal complex ...
Honors Biology Cell Division Mitosis
... Spindle fibers disappear Cleavage furrow pinches the mother cell into two daughter cells Cytokinesis = final division of the cell cytoplasm How many chromosomes in each daughter cell? 46 chromosomes at each pole 2 Diploid Cells? ...
... Spindle fibers disappear Cleavage furrow pinches the mother cell into two daughter cells Cytokinesis = final division of the cell cytoplasm How many chromosomes in each daughter cell? 46 chromosomes at each pole 2 Diploid Cells? ...
Biol 211 (1) Exam 4
... 13. Describe the Law of Segregation and the Law of Independent Assortment. a. Law of Segregation: b. Law of Independent Assortment: 14. Define each of the following terms: complete dominance, incomplete dominance, codominance. a. Complete dominance: ...
... 13. Describe the Law of Segregation and the Law of Independent Assortment. a. Law of Segregation: b. Law of Independent Assortment: 14. Define each of the following terms: complete dominance, incomplete dominance, codominance. a. Complete dominance: ...
Genetics - Killeen ISD
... • products containing aspartame should be avoided • Phenylalanine plays a role in the body's production of melanin, the pigment responsible for skin & hair color. Therefore, infants with the ...
... • products containing aspartame should be avoided • Phenylalanine plays a role in the body's production of melanin, the pigment responsible for skin & hair color. Therefore, infants with the ...
Biology_1_&_2_files/8 Genetics ACADEMIC
... Mitosis produces cells that are used during growth, development, repair, and asexual reproduction. Meiosis makes cells that enable an organism to reproduce sexually and it only happens in reproductive structures. ...
... Mitosis produces cells that are used during growth, development, repair, and asexual reproduction. Meiosis makes cells that enable an organism to reproduce sexually and it only happens in reproductive structures. ...
N5 Biology Cell Biology subunit 3 DNA and Making New Cells
... ends of the cell - the ‘north and south poles’. The membrane round the nucleus disintegrates and the chromosomes line up along the equator – in between the north and south poles. Spindle fibres from the centrioles attach to the centromere of each chromosome. The spindle fibres shorten and pull the c ...
... ends of the cell - the ‘north and south poles’. The membrane round the nucleus disintegrates and the chromosomes line up along the equator – in between the north and south poles. Spindle fibres from the centrioles attach to the centromere of each chromosome. The spindle fibres shorten and pull the c ...
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.