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Biology Vocabulary 8, test on Thursday, 1/19/17
Biology Vocabulary 8, test on Thursday, 1/19/17

... having more than two alleles that code for a specific trait substance or situation, such as a chemical or exposure to radiation, that causes mutations permanent change in a cell's DNA, ranging from changes in a single base pair to deletions of large sections of chromosomes cell division in which the ...
Bio 309F
Bio 309F

... 34. Traits such as breast formation in females or beard in males are referred to as A. sex-linked dominant traits B. sex-linked recessive traits C. sex-influenced traits D. sex-limited traits E. none of the above 35. Which of the following refer to phenotype? A. Aa B. tall plants C. wrinkled pea see ...
Ch 26 Inheritance of Traits
Ch 26 Inheritance of Traits

... shows possible combination of genes in offspring. Decide what genes will be in the sex cells of each parent. Write mother’s genes on top; write father’s genes on side. Copy the letters that appear at the top of the square into the boxes below each letter. Copy the letters that appear at the side int ...
Non-Mendelian Patterns of Inheritance: Incomplete Dominance
Non-Mendelian Patterns of Inheritance: Incomplete Dominance

... RR = red eyed Rr = red eyed R X rr = white eyed XY = male Y XX = female ...
Chromosome
Chromosome

... 1. Mutation in proto-oncogene - these genes code for growth factors, which are proteins that regulate cell division - mutation will turn them into oncogenes causing unregulated/extreme cell division 2. Mutation of tumor-suppressor genes - found in over half of all cancer cases - p53 is one such gene ...
Chromosomes, Chromosome Anomalies
Chromosomes, Chromosome Anomalies

... CEN divides the chromosome into two arms: the short arm (p arm) and the long arm (q arm). Convention places the p-arm at the top in diagrammatic representations. Each arm terminates (pter, qter) in a telomere, a highly conserved repetitive gene sequence which inhibits end-end fusion, and which is im ...
Genetics Exam 2
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... _____ The percentage of individuals with a given genotype who exhibit the phenotype associated with that genotype is called A. penetrance B. expressivity C. incomplete dominance D. co-dominance E. lethality _____ A situation where each allele produces a protein that can be detected in the heterozyg ...
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• Individuals in every population vary from one another in their traits

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DNA WebQuest - Pearland ISD
DNA WebQuest - Pearland ISD

... Take the tour of DNA by clicking on “What is DNA?” and answer the questions below: 1. In what organelle (CELL PART) would I find your DNA (YOUR INSTRUCTIONS)? 2. What does DNA stand for? 3. The DNA molecule comes in the form of a ...
Lecture 8 – PDF
Lecture 8 – PDF

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From the Department of Zoology, University of
From the Department of Zoology, University of

... For some time now the nature of the longitudinal differentiation of chromosomes into chromomeres, interchromomeric fibers, hetero-, and euchromatin has been debated. Some ten years ago I suggested that these chromosomal regions did not differ in kind, but in the spatial arrangement or degree of coil ...
Fundamentals of Genetics
Fundamentals of Genetics

... termed “sex-linked” • Males have only one copy of each sex chromosome…NO BACKUP for a defunct gene! • Females have 2 X’s, so can be “carriers”. ...
Connecting Meiosis and Inheritance
Connecting Meiosis and Inheritance

... chromosomes are separated into gametes and these gametes give the offspring genes for every trait, with each parent contributing an equal amount of information. Addressing student misconceptions and monitoring their progress is essential for the conceptual understanding of science. The teacher shoul ...
Connecting Meiosis and Inheritance
Connecting Meiosis and Inheritance

... chromosomes are separated into gametes and these gametes give the offspring genes for every trait, with each parent contributing an equal amount of information. Addressing student misconceptions and monitoring their progress is essential for the conceptual understanding of science. The teacher shoul ...
detailed meiosis
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... The Role of Meiosis in Sexual Life Cycles • Ploidy refers to the number of chromosome sets in a cell. – Diploid (2n) - condition in which cells contain two sets of chromosomes (one set from each parent) – Haploid (n) - cells contain one set of chromosomes. In animals, these cells are called gametes ...
Mitosis
Mitosis

... 29. What are all the chromosomes except the sex chromosomes called? _________________. 30. What chromosomes are needed to produce a female? _______ male? ________ 31. Give three examples of sex-linked disorders. __________________________________ __________________________________ __________________ ...
Mitosis
Mitosis

... 29. What are all the chromosomes except the sex chromosomes called? _________________. 30. What chromosomes are needed to produce a female? _______ male? ________ 31. Give three examples of sex-linked disorders. __________________________________ __________________________________ __________________ ...
Chapter 15 Assignment - kyoussef-mci
Chapter 15 Assignment - kyoussef-mci

... flies also have sex chromosomes and they contain a subset of genes as well. If the gene is located on a sex chromosome, we use a slightly different notation. Under normal diploid conditions a female fruit fly has two X chromosomes, a male has an X and a Y chromosome. Sex-linked genes are located on ...
Genetics Unit
Genetics Unit

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Introduction to Genetics
Introduction to Genetics

... daughter cells with half the number of chromosomes as the original cell. – Metaphase II- the chromosomes line up in the middle of the cell. – Anaphase II- sister chromatids are separated and move toward opposite ends of the cell. – Telophase II and Cytokinesis- nuclear membranes form and meiosis II ...
10 Meiosis Mendel 2016 student ppt
10 Meiosis Mendel 2016 student ppt

... • When cells divide by mitosis, the new cells have exactly the same number and kind of chromosomes as the original cells. • Each pea plant parent, which has 14 chromosomes, would produce gametes that contained a complete set of 14 chromosomes…. And each mitosis cycle would continue to double the chr ...
Location on a chromosome that contains the DNA code for a trait.
Location on a chromosome that contains the DNA code for a trait.

... A frog moves to a nearby pond because its own pond is drying up. What changed for the frog to cause it to move? • The environment ...
Biology-Chapter-12
Biology-Chapter-12

...  Thomas Hunt Morgan (1910) discovered that fruit flies had sex-linked traits  Most are carried on the X Chromosome 1. Red-green blindness-X-linked recessive inheritance  Can’t see the different between green and red 2. Hemophilia-X-linked recessive inheritance  Famous example is Queen Victoria’s ...
Mitosis Study Guide
Mitosis Study Guide

... 12. -the difference between naked DNA, chromatin, and chromosomes. 13. -the definition of chromatid, centromere, and telomere. 14. - how to identify chromatids given an image of a replicated chromosome. 15. -how to identify the centromere and telomeres of a replicated chromosome. 16. -why cells that ...
Document
Document

... Ohno’s hypothesis on the role of gene duplication in evolution Question: How do “new” genes arise? Duplications might allow for major mutation in the extra copy of the gene. Over time, mutations could result in a new function for the duplicated gene - essentially a new ...
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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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