Biology 101-003
... Know the animal life cycle (be able to draw and label) and what haploid and diploid cells are (know what ploidy means). What are the 3 defining features of meiosis? Know what maternal and paternal chromosomes are, how crossing over occurs, and between what and when in meiosis it occurs. Also know ...
... Know the animal life cycle (be able to draw and label) and what haploid and diploid cells are (know what ploidy means). What are the 3 defining features of meiosis? Know what maternal and paternal chromosomes are, how crossing over occurs, and between what and when in meiosis it occurs. Also know ...
The Cell Cycle - Dr. Vernon-
... after replication, it may be two coiled DNA molecules held together at the center. The area it is held together is called “centromere” ...
... after replication, it may be two coiled DNA molecules held together at the center. The area it is held together is called “centromere” ...
Chapter 10 Section 2 Notes
... S – Chromosomes are _____________________ and the synthesis of _______ molecules takes place. Key proteins associated with chromosomes are ______________________. G2 – (__________________ phase in interphase) Many of the organelles and molecules required for cell division are ___________________ ...
... S – Chromosomes are _____________________ and the synthesis of _______ molecules takes place. Key proteins associated with chromosomes are ______________________. G2 – (__________________ phase in interphase) Many of the organelles and molecules required for cell division are ___________________ ...
Document
... DURING TELOPHASE, THE CHROMOSOMES BEGIN TO DISPERSE INTO A TANGLE OF DENSE MATERIAL, THE NUCLEAR ENVELOPE REFORMS AROUND EACH CLUSTER OF CHROMOSOMES, THE SPINDLE BREAKS APART, AND THE NUCLEOLUS BECOMES VISIBLE IN EACH NUCLEUS. ...
... DURING TELOPHASE, THE CHROMOSOMES BEGIN TO DISPERSE INTO A TANGLE OF DENSE MATERIAL, THE NUCLEAR ENVELOPE REFORMS AROUND EACH CLUSTER OF CHROMOSOMES, THE SPINDLE BREAKS APART, AND THE NUCLEOLUS BECOMES VISIBLE IN EACH NUCLEUS. ...
Cell Division (Mitosis)
... continue to move until they have separated into two groups on opposite sides of the cell ...
... continue to move until they have separated into two groups on opposite sides of the cell ...
Cell Division - Kelso High School
... In stage 1 of mitosis, the nucleus contains long, uncoiled ...
... In stage 1 of mitosis, the nucleus contains long, uncoiled ...
SBI 3U Genetics Test Review Sheet
... 1. In pea plants, tall is dominant and short is recessive. Using a Punnett square, work out the genotypes and phenotypes of the cross between (a) two heterozygous tall plants, and (b) a ...
... 1. In pea plants, tall is dominant and short is recessive. Using a Punnett square, work out the genotypes and phenotypes of the cross between (a) two heterozygous tall plants, and (b) a ...
cell division
... • Cells spend most of their life in interphase. • Normal cell activities occur. • To prepare for cell division, the chromosomes make copies of themselves. • In other words, the DNA replicates. • Recall, DNA polymerase… etc. ...
... • Cells spend most of their life in interphase. • Normal cell activities occur. • To prepare for cell division, the chromosomes make copies of themselves. • In other words, the DNA replicates. • Recall, DNA polymerase… etc. ...
Chromosome Lecture
... • Meiosis provides opportunities for new combinations of genes to occurs in gametes via independent assortment of chromosomes (metaphase) and crossing over (prophase I). • Pairing up of homologous chromosomes- Synapsis (each pair is a bivalent, consist of 4 chromatids) ...
... • Meiosis provides opportunities for new combinations of genes to occurs in gametes via independent assortment of chromosomes (metaphase) and crossing over (prophase I). • Pairing up of homologous chromosomes- Synapsis (each pair is a bivalent, consist of 4 chromatids) ...
Name: MEIOSIS MANIPULATIVES Introduction: You are going to
... b) Pair up each newly replicated chromosome with its homologous chromosome (meaning with the chromosome with the same letters, capitol or lowercase nonwithstanding) You will now have two tetrads that contain 4 sister chromatids each, 8 chromatids in all. c) Now that the homologous chromosomes are ne ...
... b) Pair up each newly replicated chromosome with its homologous chromosome (meaning with the chromosome with the same letters, capitol or lowercase nonwithstanding) You will now have two tetrads that contain 4 sister chromatids each, 8 chromatids in all. c) Now that the homologous chromosomes are ne ...
BIOLOGY STANDARD 4
... Co-dominant - a genetic pattern where the pair of alleles is equally expressed in the offspring for example a black chicken mated with a white chicken produce speckled offspring Cystic fibrosis - a genetic disorder caused by a recessive trait carried on the autosomes that caused mucus build up in th ...
... Co-dominant - a genetic pattern where the pair of alleles is equally expressed in the offspring for example a black chicken mated with a white chicken produce speckled offspring Cystic fibrosis - a genetic disorder caused by a recessive trait carried on the autosomes that caused mucus build up in th ...
Study Guide
... 1. The Chromosome Theory of Inheritance states that genes are carried from parents to their offspring on chromosomes. 2. Chromosomes are rod-like bundles of coiled DNA. They contain a string of genes packaged in a single unit. Genes are located on chromosomes. 3. Genes are the structures that carry ...
... 1. The Chromosome Theory of Inheritance states that genes are carried from parents to their offspring on chromosomes. 2. Chromosomes are rod-like bundles of coiled DNA. They contain a string of genes packaged in a single unit. Genes are located on chromosomes. 3. Genes are the structures that carry ...
Reproductive system
... a pair can go with any one from another pair, so mother’s and father’s gene codes are mixed. Each gamete eventually produced will have a complete set of genes but a mixture of DNA codes taken from mother and father, giving a huge number of different combinations. The chromosomes split at the centrom ...
... a pair can go with any one from another pair, so mother’s and father’s gene codes are mixed. Each gamete eventually produced will have a complete set of genes but a mixture of DNA codes taken from mother and father, giving a huge number of different combinations. The chromosomes split at the centrom ...
Structural Changes
... translocated to a region close to tightly coiled, inactive heterochromatin, it can sometimes be partially engulfed by that heterochromatin. This will result in a failure of the gene to be expressed in the cells where the heterochromatin coils over the ...
... translocated to a region close to tightly coiled, inactive heterochromatin, it can sometimes be partially engulfed by that heterochromatin. This will result in a failure of the gene to be expressed in the cells where the heterochromatin coils over the ...
Cell Cycle and Mitosis Notes ppt
... Sister chromatids separate One set moves to each end or pole Ends when chromosomes stop moving ...
... Sister chromatids separate One set moves to each end or pole Ends when chromosomes stop moving ...
Genetics Somatic cells reproduce/divide using the process of MITOSIS
... • a new cell produces through cell division of a parent cell ...
... • a new cell produces through cell division of a parent cell ...
MS Word
... the relationships between ideas and if you can use the memorized information to form ideas of your own. I use the word understand rather than just know for that reason. Part 1 Mitosis and cell cycle You should know and understand: The phases of the cell cycle and what is happening in each phase How ...
... the relationships between ideas and if you can use the memorized information to form ideas of your own. I use the word understand rather than just know for that reason. Part 1 Mitosis and cell cycle You should know and understand: The phases of the cell cycle and what is happening in each phase How ...
Name_____________ ______ Due Date: Biology MCA Q3 Exam
... 13. In humans, being color-blind is a recessive, sex-linked trait. Show the results of a cross between a color-blind woman and a normal man. Include the genotypes of the parents, the punnett square, and the genotypes and phenotypes of the offspring (including %). ...
... 13. In humans, being color-blind is a recessive, sex-linked trait. Show the results of a cross between a color-blind woman and a normal man. Include the genotypes of the parents, the punnett square, and the genotypes and phenotypes of the offspring (including %). ...
Chapter 6
... 2. Mutation and sexual reproduction lead to genetic variation in a population. As a basis for understanding this concept: d. Students know new combinations of alleles may be generated in a zygote through the fusion of male and female gametes (fertilization). e. Students know why approximately half o ...
... 2. Mutation and sexual reproduction lead to genetic variation in a population. As a basis for understanding this concept: d. Students know new combinations of alleles may be generated in a zygote through the fusion of male and female gametes (fertilization). e. Students know why approximately half o ...
Biology Unit 5 Reproduction
... 18. Define and DRAW Crossing-over. When does crossing over occur? Define Independent assortment. When does independent assortment occur? Crossing-over: recombines genes on chromatids, mixing maternal and paternal genes on a single chromatid Independent assortment: maternal and paternal chromosomes s ...
... 18. Define and DRAW Crossing-over. When does crossing over occur? Define Independent assortment. When does independent assortment occur? Crossing-over: recombines genes on chromatids, mixing maternal and paternal genes on a single chromatid Independent assortment: maternal and paternal chromosomes s ...
Cancer cells
... – For description, mitosis is usually broken into five subphases: • Prophase • Prometaphase • Metaphase • Anaphase • Telophase ...
... – For description, mitosis is usually broken into five subphases: • Prophase • Prometaphase • Metaphase • Anaphase • Telophase ...
Name
... hereditary units called _____________ appear in the same locations on both chromosomes of each pair Going in Circles a cell’s life cycle has stages or phases when a cell is not dividing it is in a stage called __________________ o during this phase: o cells are busy carrying on their life proc ...
... hereditary units called _____________ appear in the same locations on both chromosomes of each pair Going in Circles a cell’s life cycle has stages or phases when a cell is not dividing it is in a stage called __________________ o during this phase: o cells are busy carrying on their life proc ...
Karyotyping
... (j) explain how chromosome mutations such as Turner’s and Klinefelter’s may occur during meiosis (with reference to nondisjunction only). ...
... (j) explain how chromosome mutations such as Turner’s and Klinefelter’s may occur during meiosis (with reference to nondisjunction only). ...
mitosis cytokinesis
... DNA (and therefore chromosomes) were replicated during the S phase of interphase, so each chromosome actually consists of two “sister” chromatids, and looks like the image on the next page Humans have 23 pairs of chromosomes, for a grand total of 46 chromosomes ...
... DNA (and therefore chromosomes) were replicated during the S phase of interphase, so each chromosome actually consists of two “sister” chromatids, and looks like the image on the next page Humans have 23 pairs of chromosomes, for a grand total of 46 chromosomes ...
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.