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Life Science vocabulary
Life Science vocabulary

... Mitosis- A type of cell division that results in two daughter cells each the same as the parent nucleus, typical of ordinary tissue growth. Meiosis- A type of cell division that produces haploid cells. This occurs only in reproductive tissues (testes, ovaries) Act59 Gene Combo ...
Meiosis, or reduction division, is a special type of cell division
Meiosis, or reduction division, is a special type of cell division

... During anaphase II, following now, the two sister chromatids (1) of each chromosome are disjoined just as in mitosis. The separation begins at the kinetochores (2), the point where the traction fibers of the central spindle attach. From here, the chromosomes are pulled slowly towards the centrioles ...
Meiosis, or reduction division, is a special type of cell division
Meiosis, or reduction division, is a special type of cell division

... During anaphase II, following now, the two sister chromatids (1) of each chromosome are disjoined just as in mitosis. The separation begins at the kinetochores (2), the point where the traction fibers of the central spindle attach. From here, the chromosomes are pulled slowly towards the centrioles ...
DNA PPT
DNA PPT

...  Men have XY. They have an equal chance of giving either an X or Y to their child.  If a male gives an X, that would create XX (girl) when combined with the mother’s X. If the male donates Y, that means XY (boy). ...
Y chromosome
Y chromosome

... 1. The results of reciprocal crosses were different 2. F2 progeny ratios not in quarters  Remember that when Mendel performed reciprocal crosses between his various plant lines, he always go the same result: when he crossed yellow with green he always got yellow F1 regardless of whether the pollen ...
doc Summer 2010 Lecture 3
doc Summer 2010 Lecture 3

... - chromosomal inheritance is 50% male and 50% female - organelle DNA: male contribution is low o random distribution—no spindle dividing it  get a segregation of mitochondria into 2 daughters  if the dominant allele is on the L at time of division and recessive on R, then one daughter will only ha ...
What is Meiosis? - Manhasset Public Schools
What is Meiosis? - Manhasset Public Schools

... Why does this allow a species to evolve? ...
iGCSE Biology Section 3 lesson 4
iGCSE Biology Section 3 lesson 4

... each with half the number of chromosomes, and that this results in the formation of genetically different haploid gametes 3.26 understand that random fertilisation produces genetic variation of offspring 3.27 know that in human cells the diploid number of chromosomes is 46 and the haploid number is ...
Chromosomes - WordPress.com
Chromosomes - WordPress.com

... Eukaryotic origins of replication; yeast, where the presence of a putative replication origin can be tested by a genetic assay. Bacterial replication origin in the plasmid does not function in yeast, therefore the few plasmids that transform at high efficiency must possess a sequence within the inse ...
Mutations - Department of Statistics | Rajshahi University
Mutations - Department of Statistics | Rajshahi University

... The genome is all the DNA in a cell. All the DNA on all the chromosomes  Includes genes, intergenic sequences, repeats ...
Sem 1 Revision Chem and Biol File
Sem 1 Revision Chem and Biol File

... 13. Malcolm and Mary had five kids: Maria, Michelle, Martha, Michael, and Matthew. Michael and Maria have thalassemia. Both parents are normal. a) Write down the genotype of Malcolm and Mary. Malcolm: Tt Mary: Tt b) Write down the genotype for Maria and Michael Maria: tt Michael: tt c) If Malcolm an ...
Heredity and Genetics Vocabulary
Heredity and Genetics Vocabulary

... Gene is located on autosomes and requires 2 mutated genes (recessive alleles) ...
Cell Division (Meiosis)
Cell Division (Meiosis)

... Meiosis II • No interphase II (or very short - no more DNA replication) • Remember: Meiosis II is similar to mitosis ...
Day 1 General information • Lecture powerpoints under resources
Day 1 General information • Lecture powerpoints under resources

... Loss-of-function allele is when the heterozygote makes enough protein to still work (recessive to wildtype) Haploinsufficiency: when having only one wild-type allele is NOT sufficient to produce the wildtype phenotype (the wild-type allele is recessive because the threshold for wild phenotype is hi ...
Genetics unit study guide (notes)
Genetics unit study guide (notes)

... cells fuse, bringing together half the genetic information from the parents into one new cell, that is now genetically different from both its parents. This increases genetic diversity, as half of the genetic content from each of the parents brings about unique offspring, which possesses a unique ge ...
dual color, break apart rearrangement probe
dual color, break apart rearrangement probe

... Discussion and Conclusion Cytogenetic studies have been instrumental in mapping cancer-related genes located at genomic sites that are visibly involved in neoplasia-associated chromosomal rearrangements. The importance of cytogenetic characterization of solid tumors is twofold. First, recurrent aber ...
Genetics of Sesame Street Characters
Genetics of Sesame Street Characters

... • When you fall and scrape the skin off your hands and knees, how does your body make new skin cells to replace the skin cells that were scraped off? • How does your body make sure each new cell has all the chromosomes it needs to have? • How does a baby get his or her genes? ...
Document
Document

... 40) What are some human genetic disorders caused by inherited recessive alleles? Cystic fibrosis, Tay-Sach’s, colorblindness and hemophilia which are both sex-linked too. 41) How can a human trait be determined by a simple dominant allele? Only one dominant allele is needed to express the trait. Bot ...
Name - TeacherWeb
Name - TeacherWeb

... – Centrioles migrate to opposite ______________ of the cell. – The ______________ apparatus forms – The nuclear envelope begins to ________________  Steps different than prophase in mitosis: – As the DNA coils, _______________________ chromosomes line up with each other, gene by gene along their le ...
BARBARA McCLINTOCK-Biography
BARBARA McCLINTOCK-Biography

... Studies of the origin and expression of gene instability at a number of known loci in the maize chromosomes were summarized by 1951-52 studies by Barbara McClintock . It was concluded that changes in genie expression result from chromosome alterations at the locus of a gene and these are initiated b ...
Name - O. Henry Science
Name - O. Henry Science

... People inherit two genes for every characteristic, and they get one gene from each parent. Sometimes the two genes for one trait contain different codes. This affects how the trait appears in the child. For example, maybe both parents have brown eyes. Let's say that they each have one gene for brown ...
Biology Final Exam Vocabulary Review
Biology Final Exam Vocabulary Review

... 1. A(n) __________________ is a chromosome that determines the sex of an organism. 2. Any chromosome (#1 through 22) that is not involved in determining the sex of an organism is called a(n) __________________. 3. __________________ is the procedure in which fetal cells are obtained for genetic anal ...
Chromosome structure File
Chromosome structure File

... species i.e - a two fold difference in genome size between two salamander species ...
Resources - CSE, IIT Bombay
Resources - CSE, IIT Bombay

... Let i = 1, where i denotes chromosome index; Calculate P(xi) using proportional selection; sum = P(xi); choose r ~ ...
chapt16_lecture_edited [Compatibility Mode]
chapt16_lecture_edited [Compatibility Mode]

... with respect to both traits  Data for F2 hybrids consistent only with independent assortment  Law of Independent Assortment ...
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Karyotype



A karyotype (from Greek κάρυον karyon, ""kernel"", ""seed"", or ""nucleus"", and τύπος typos, ""general form"") is the number and appearance of chromosomes in the nucleus of a eukaryotic cell. The term is also used for the complete set of chromosomes in a species, or an individual organism.Karyotypes describe the chromosome count of an organism, and what these chromosomes look like under a light microscope. Attention is paid to their length, the position of the centromeres, banding pattern, any differences between the sex chromosomes, and any other physical characteristics. The preparation and study of karyotypes is part of cytogenetics. The study of whole sets of chromosomes is sometimes known as karyology. The chromosomes are depicted (by rearranging a photomicrograph) in a standard format known as a karyogram or idiogram: in pairs, ordered by size and position of centromere for chromosomes of the same size.The basic number of chromosomes in the somatic cells of an individual or a species is called the somatic number and is designated 2n. Thus, in humans 2n = 46. In the germ-line (the sex cells) the chromosome number is n (humans: n = 23).p28So, in normal diploid organisms, autosomal chromosomes are present in two copies. There may, or may not, be sex chromosomes. Polyploid cells have multiple copies of chromosomes and haploid cells have single copies.The study of karyotypes is important for cell biology and genetics, and the results may be used in evolutionary biology (karyosystematics) and medicine. Karyotypes can be used for many purposes; such as to study chromosomal aberrations, cellular function, taxonomic relationships, and to gather information about past evolutionary events.
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