Genetics
... The DNA in every cell is located in rod like segments called chromosomes Chromosomes occurs in pairs in every cell of our body except in the sperm and ovum. Chromosomes numbers are the same for each specie. ...
... The DNA in every cell is located in rod like segments called chromosomes Chromosomes occurs in pairs in every cell of our body except in the sperm and ovum. Chromosomes numbers are the same for each specie. ...
Introduction to Genetics Terms
... nervous system; symptoms don’t appear until 30-50 years of age Karyotype____ a “line up” of chromosomes used to study for abnormalities Klinefelter Syndrome____ an example of aneuploidy of the sex chromosomes which results in 47XXY; a sterile male who is taller than average & may exhibit some retard ...
... nervous system; symptoms don’t appear until 30-50 years of age Karyotype____ a “line up” of chromosomes used to study for abnormalities Klinefelter Syndrome____ an example of aneuploidy of the sex chromosomes which results in 47XXY; a sterile male who is taller than average & may exhibit some retard ...
Genetic Variation
... resides. • Cells have many smaller structures called organelles, that perform functions essential to life. • The nucleus of our cells contains our genetic information. ...
... resides. • Cells have many smaller structures called organelles, that perform functions essential to life. • The nucleus of our cells contains our genetic information. ...
MEIOSIS Notes
... • Start with 46 double stranded chromosomes (2n) – After 1st division - 23 double stranded chromosomes (n) – After 2nd division - 23 single stranded chromosomes (n) • Occurs in our germ cells – cells that produce our gametes • egg and sperm ...
... • Start with 46 double stranded chromosomes (2n) – After 1st division - 23 double stranded chromosomes (n) – After 2nd division - 23 single stranded chromosomes (n) • Occurs in our germ cells – cells that produce our gametes • egg and sperm ...
DNA, Mutations, Chromosomes, and Reproduction Review
... Chromosome Theory of Inheritance • Sutton discovered that sex cells contain half the number of chromosomes as body cells. • One set of alleles comes from the male parent; the second set comes from the female parent • Chromosome theory of inheritance – Genes are carried from parents to their offspri ...
... Chromosome Theory of Inheritance • Sutton discovered that sex cells contain half the number of chromosomes as body cells. • One set of alleles comes from the male parent; the second set comes from the female parent • Chromosome theory of inheritance – Genes are carried from parents to their offspri ...
GENETICS & HEREDITY
... NUCLEUS: Central point of cell / contains genetic coding for maintaining life systems and issuing commands for growth & reproduction ...
... NUCLEUS: Central point of cell / contains genetic coding for maintaining life systems and issuing commands for growth & reproduction ...
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 ...
Document
... • Autosomal gene expression – A heterozygote for a recessive disorder is a carrier. – Disorders caused by dominant alleles are uncommon. ...
... • Autosomal gene expression – A heterozygote for a recessive disorder is a carrier. – Disorders caused by dominant alleles are uncommon. ...
Unit 3- study guide Test 1
... 18. Why is crossing over important? When does it happen? Crossing over is where the paternal and maternal chromsomes “cross over” each other and exchange genetic information to create a new chromosome, with some of both parent’s DNA. This occurs in Prophase I. 19. Why is meiosis important for the fo ...
... 18. Why is crossing over important? When does it happen? Crossing over is where the paternal and maternal chromsomes “cross over” each other and exchange genetic information to create a new chromosome, with some of both parent’s DNA. This occurs in Prophase I. 19. Why is meiosis important for the fo ...
CELL REPRODUCTION
... • Metabolism of the cell continues • Chromosomes and DNA are duplicated Division – Two types – Mitosis and Meiosis • Mitosis is for regular body cells of 46 chromosomes. These cells are also called autosomes. This is dividing to copy. A cell divides to make two new cells with 46 chromosomes each. Si ...
... • Metabolism of the cell continues • Chromosomes and DNA are duplicated Division – Two types – Mitosis and Meiosis • Mitosis is for regular body cells of 46 chromosomes. These cells are also called autosomes. This is dividing to copy. A cell divides to make two new cells with 46 chromosomes each. Si ...
alleles - Jordan High School
... • Telophase II & cytokinesis—both cells separate & form 4 new cells • Each cell has half the set of chromosomes (haploid) ...
... • Telophase II & cytokinesis—both cells separate & form 4 new cells • Each cell has half the set of chromosomes (haploid) ...
Crossingover and Gene Mapping
... characteristics, the exact combination of genes we inherit, and thus our physical traits, is in part due to a process our chromosomes undergo, known as genetic recombination. Genetic recombination happens during meiosis. Inside the cells that produce sperm and eggs, chromosomes become paired. While ...
... characteristics, the exact combination of genes we inherit, and thus our physical traits, is in part due to a process our chromosomes undergo, known as genetic recombination. Genetic recombination happens during meiosis. Inside the cells that produce sperm and eggs, chromosomes become paired. While ...
ExamView - Unit 2 pracitce test.tst
... 12. The different forms of a gene are called ____________________. 13. If the allele for shortness in pea plants were dominant, all the pea plants in Mendel’s F1 generation (where he crossed pure-breeding tall with pure-breeding short) would have been ____________________. 14. ____________________ i ...
... 12. The different forms of a gene are called ____________________. 13. If the allele for shortness in pea plants were dominant, all the pea plants in Mendel’s F1 generation (where he crossed pure-breeding tall with pure-breeding short) would have been ____________________. 14. ____________________ i ...
Mendel`s Work Notes
... - sex cells; a reproductive cell having the haploid (half the normal) number of chromosomes female gamete (♀) - egg, haploid or n (1/2 the normal number of chromosomes, 23 in humans) male gamete (♂) - sperm, haploid or n (1/2 the normal number of chromosomes, 23 in humans) ...
... - sex cells; a reproductive cell having the haploid (half the normal) number of chromosomes female gamete (♀) - egg, haploid or n (1/2 the normal number of chromosomes, 23 in humans) male gamete (♂) - sperm, haploid or n (1/2 the normal number of chromosomes, 23 in humans) ...
B1 - Genetic Variation and Evolution Quiz
... Sexual involves fusing gametes, mixing of genetic material, two parents, results in variation, whereas asexual produces clones and only one parent is required as cells are split. ...
... Sexual involves fusing gametes, mixing of genetic material, two parents, results in variation, whereas asexual produces clones and only one parent is required as cells are split. ...
Section 6-1 Chromosomes
... copy of the genetic information. 2. Cell divides – bacterium divides by adding a new cell membrane to a point on the membrane between the two DNA copies. As new material is added, the growing cell membrane pushes inward and the cell is constricted in the middle. It will be pinched into two cells. ...
... copy of the genetic information. 2. Cell divides – bacterium divides by adding a new cell membrane to a point on the membrane between the two DNA copies. As new material is added, the growing cell membrane pushes inward and the cell is constricted in the middle. It will be pinched into two cells. ...
Honors Genetics: MIDTERM Exam Review REVIEW ALL OLD
... What is RECOMBINATION? Combining DNA from different organisms into a single genome. Describe CLONING. Taking SOMATIC DNA from one organism and placing into the EGG of another organism to produce and embryonic CLONE of the original organism. What organisms are currently being genetically engineered a ...
... What is RECOMBINATION? Combining DNA from different organisms into a single genome. Describe CLONING. Taking SOMATIC DNA from one organism and placing into the EGG of another organism to produce and embryonic CLONE of the original organism. What organisms are currently being genetically engineered a ...
BILD 10.Problem Set 4.KEY
... A) makes it possible to determine the genotype of an individual of unknown genotype who exhibits the dominant version of a trait. B) is a cross of an individual whose genotype for a trait is not known with an individual homozygous-recessive for the trait. C) sometimes requires the production of mult ...
... A) makes it possible to determine the genotype of an individual of unknown genotype who exhibits the dominant version of a trait. B) is a cross of an individual whose genotype for a trait is not known with an individual homozygous-recessive for the trait. C) sometimes requires the production of mult ...
Genetics – word list
... Assumption: number of male and female gamete contribute equally to zygote. If the amount in the gamete = n, the amount in the zygote = 2n. The number of chromosomes in human being cells Therefore, the number of chromosomes in gamete There are 2 types of cell division: ...
... Assumption: number of male and female gamete contribute equally to zygote. If the amount in the gamete = n, the amount in the zygote = 2n. The number of chromosomes in human being cells Therefore, the number of chromosomes in gamete There are 2 types of cell division: ...
Biology 12: Comparing Mitosis and Meiosis
... Biology 12: Comparing Mitosis and Meiosis Name : __________________________ Instructions: Compare the two processes of mitosis and meiosis by completing the table below. Read each characteristic and make short jot notes discussing any important differences, similarities or events occurring in each p ...
... Biology 12: Comparing Mitosis and Meiosis Name : __________________________ Instructions: Compare the two processes of mitosis and meiosis by completing the table below. Read each characteristic and make short jot notes discussing any important differences, similarities or events occurring in each p ...
Introduction to Genetics
... diploid or 2N cell, to create 4 haploid cells (1N each). • Before the first division, the chromosomes replicate to form the tetrad (X X figure). The homologous pairs and their copies go through crossover. • Crossover produces new combinations of alleles, It makes you unique! ...
... diploid or 2N cell, to create 4 haploid cells (1N each). • Before the first division, the chromosomes replicate to form the tetrad (X X figure). The homologous pairs and their copies go through crossover. • Crossover produces new combinations of alleles, It makes you unique! ...
Meiosis Notes
... Meiosis does two things 1) Meiosis takes a cell with two copies of every chromosome (diploid) and makes cells with a single copy of every chromosome (haploid). This is a good idea if you’re going to combine two cells to make a new organism. This trick is accomplished by halving chromosome number. I ...
... Meiosis does two things 1) Meiosis takes a cell with two copies of every chromosome (diploid) and makes cells with a single copy of every chromosome (haploid). This is a good idea if you’re going to combine two cells to make a new organism. This trick is accomplished by halving chromosome number. I ...
Ploidy
Ploidy is the number of sets of chromosomes in a cell. Usually a gamete (sperm or egg, which fuse into a single cell during the fertilization phase of sexual reproduction) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The gametic or haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n, the zygotic or diploid number) i.e. two copies of autosomal chromosomes. For humans, a diploid species, n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs.Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).