A Closer Look at Conception
... Just as personal traits can be passed on, so can medical conditions. EX: asthma, diabetes, some cancers, cystic fibrosis ...
... Just as personal traits can be passed on, so can medical conditions. EX: asthma, diabetes, some cancers, cystic fibrosis ...
Human Genetics and Linked Genes
... considered LINKED! How close or far away are they? Fewer gamete possibilities the closer they are! Why? Less possibility for crossing over to occur. Independent assortment does not apply No linkage if genes are on separate chromosomes (# of recombinants ...
... considered LINKED! How close or far away are they? Fewer gamete possibilities the closer they are! Why? Less possibility for crossing over to occur. Independent assortment does not apply No linkage if genes are on separate chromosomes (# of recombinants ...
Web Quest
... e. Answer the following questions as you go. Circle the correct answer(s): *Which of these genotypes would result in a dragon with horns? (There might be more than one) ...
... e. Answer the following questions as you go. Circle the correct answer(s): *Which of these genotypes would result in a dragon with horns? (There might be more than one) ...
AP & Regents Biology
... considered LINKED! How close or far away are they? Fewer gamete possibilities the closer they are! Why? Less possibility for crossing over to occur. Independent assortment does not apply No linkage if genes are on separate chromosomes (# of recombinants ...
... considered LINKED! How close or far away are they? Fewer gamete possibilities the closer they are! Why? Less possibility for crossing over to occur. Independent assortment does not apply No linkage if genes are on separate chromosomes (# of recombinants ...
Chapter 3 - Independent assortment of genes
... Review Mendel’s “rules of the game” 1) Genes occur in pairs - Genetic characteristics are controlled by genes that exist in pairs called alleles. 2) Dominance/Recessiveness- When two unlike alleles responsible for a single character are present in a single individual, one is dominant (expressed) to ...
... Review Mendel’s “rules of the game” 1) Genes occur in pairs - Genetic characteristics are controlled by genes that exist in pairs called alleles. 2) Dominance/Recessiveness- When two unlike alleles responsible for a single character are present in a single individual, one is dominant (expressed) to ...
Passing it on Notes
... Gametes only have half of a complete set of chromosomes for fertilization to create a zygote. They are produced through meiosis. ...
... Gametes only have half of a complete set of chromosomes for fertilization to create a zygote. They are produced through meiosis. ...
Based on the study of probability
... – Prophase I- Crossing over of alleles occurs! – Metaphase I- homologous chromosomes side by side – Anaphase I- ho. chrom. separate (not chromatids) – Telophase I- 2 cells with 2 chromatids of every chromos. ...
... – Prophase I- Crossing over of alleles occurs! – Metaphase I- homologous chromosomes side by side – Anaphase I- ho. chrom. separate (not chromatids) – Telophase I- 2 cells with 2 chromatids of every chromos. ...
Chromosomes and Genetics
... came in pairs that segregated (separated) during meiosis These separated chromosomes then formed new pairs when the egg and sperm united ...
... came in pairs that segregated (separated) during meiosis These separated chromosomes then formed new pairs when the egg and sperm united ...
notes
... Interphase: 90 percent of its time consists of the first three phases of the cell cycle. First growth (G1) Phase: a cell grows rapidly and carries out its routine functions. Most cells that are not dividing remain in the G1 phase. Synthesis (S) Phase: A cells DNA is copied during this phase. At the ...
... Interphase: 90 percent of its time consists of the first three phases of the cell cycle. First growth (G1) Phase: a cell grows rapidly and carries out its routine functions. Most cells that are not dividing remain in the G1 phase. Synthesis (S) Phase: A cells DNA is copied during this phase. At the ...
Function of Mitosis
... - each diploid cell has 2 copies of each chromosome - one copy from egg, one copy from sperm - during fertilization the union of gametes forms a diploid zygote - all cells in the fetus contain copies of chromosomes of this original diploid zygote - therefore each cell has one copy of each of mother’ ...
... - each diploid cell has 2 copies of each chromosome - one copy from egg, one copy from sperm - during fertilization the union of gametes forms a diploid zygote - all cells in the fetus contain copies of chromosomes of this original diploid zygote - therefore each cell has one copy of each of mother’ ...
PPT
... Random Fertilization – The human egg cell is fertilized randomly by one sperm, leading to genetic variety in the zygote. ...
... Random Fertilization – The human egg cell is fertilized randomly by one sperm, leading to genetic variety in the zygote. ...
Document
... Cell preparing for cell division. Chromosomes line up along an invisible center line in the nucleus and get torn apart. ...
... Cell preparing for cell division. Chromosomes line up along an invisible center line in the nucleus and get torn apart. ...
Dragon Genetics
... The next step in predicting the inheritance of the wing and horn genes is to predict the outcome of fertilization between these eggs and sperm. In the following chart, label the gene on each chromosome in each type of zygote that could be produced by a mating between this mother and father. Then, f ...
... The next step in predicting the inheritance of the wing and horn genes is to predict the outcome of fertilization between these eggs and sperm. In the following chart, label the gene on each chromosome in each type of zygote that could be produced by a mating between this mother and father. Then, f ...
Biology
... Breakage of a chromosome can lead to four types of mutations: 1. deletion mutation – a piece breaks off completely 2. duplication mutation – it carries 2 copies 3. inversion mutation – reattachment is reversed 4. translocation mutation – attaches to the wrong ...
... Breakage of a chromosome can lead to four types of mutations: 1. deletion mutation – a piece breaks off completely 2. duplication mutation – it carries 2 copies 3. inversion mutation – reattachment is reversed 4. translocation mutation – attaches to the wrong ...
Rationale of Genetic Studies Some goals of genetic studies include
... Biologists distinguish two types of cells, eukaryotic cells and prokaryotic cells. Eukaryotic cells differ from prokaryotic cells in that eukaryotic cells contain many membrane bound organelles, small membrane-bound structures inside the cell that carry out specialized functions. In particular, euka ...
... Biologists distinguish two types of cells, eukaryotic cells and prokaryotic cells. Eukaryotic cells differ from prokaryotic cells in that eukaryotic cells contain many membrane bound organelles, small membrane-bound structures inside the cell that carry out specialized functions. In particular, euka ...
Biol. 303 EXAM I 9/22/08 Name
... Each of the following statements about meiosis is true EXCEPT A. B. C. D. ...
... Each of the following statements about meiosis is true EXCEPT A. B. C. D. ...
Note: Remove this blank sheet of paper from the exam and use it to
... 19. Analyses of chromosomes in white blood cells from a new born revealed 47 chromosomes in each cell. This chromosomal aberation is referred to as: A. Aneuploidy B. Euploidy C. Polyploidy D. Triploidy E. Monosomy 20. Down's Syndrome can be due to: A. trisomy 21 B. somatic mosaic with cells containi ...
... 19. Analyses of chromosomes in white blood cells from a new born revealed 47 chromosomes in each cell. This chromosomal aberation is referred to as: A. Aneuploidy B. Euploidy C. Polyploidy D. Triploidy E. Monosomy 20. Down's Syndrome can be due to: A. trisomy 21 B. somatic mosaic with cells containi ...
Mendel`s Principles
... Activity A: The Chromosomal Basis of Segregation Diploid cells contain two sets of homologous chromosomes. One set, or one member of each pair, comes from each parent. Each pair of homologous chromosomes carries genes that govern the same traits. For example, in pea plants, flower color is determine ...
... Activity A: The Chromosomal Basis of Segregation Diploid cells contain two sets of homologous chromosomes. One set, or one member of each pair, comes from each parent. Each pair of homologous chromosomes carries genes that govern the same traits. For example, in pea plants, flower color is determine ...
CST Review Sheet 2 DNA and RNA 1. The unit to the right which
... The above sequence of DNA is part of a gene. How many amino acids are coded for by this segment? a. 4 b. 8 c. 12 d. 20 Meiosis 1. A chromosome is made of DNA wrapped tightly around histone proteins 2. How many chromosomes does a human gamete contain? ___23___ How many chromosomes does a human body c ...
... The above sequence of DNA is part of a gene. How many amino acids are coded for by this segment? a. 4 b. 8 c. 12 d. 20 Meiosis 1. A chromosome is made of DNA wrapped tightly around histone proteins 2. How many chromosomes does a human gamete contain? ___23___ How many chromosomes does a human body c ...
Slide 1
... separate and are distributed to two different cells. The resulting sex cells have only have half as many chromosomes as the other cells in the organism. ...
... separate and are distributed to two different cells. The resulting sex cells have only have half as many chromosomes as the other cells in the organism. ...
Sex Chromosomes
... 3. ___________________ - (_________), which occurs once in every _________ live births, produces _______________ females 4. ___________________ or ______________________ (_________) - , which occurs once in every 5000 births, produces _________________, but _______________ ...
... 3. ___________________ - (_________), which occurs once in every _________ live births, produces _______________ females 4. ___________________ or ______________________ (_________) - , which occurs once in every 5000 births, produces _________________, but _______________ ...
BIO 220 Chapter 8 lecture outline Vocabulary Central dogma of
... Transduction Plasmids & transposons Objective questions 1. Be able to define all of the vocabulary used in lecture. 2. What is the central dogma of biology? Who proposed this theory? 3. What is the difference between the terms genotype and phenotype? Are bacteria typically diploid or haploid? What d ...
... Transduction Plasmids & transposons Objective questions 1. Be able to define all of the vocabulary used in lecture. 2. What is the central dogma of biology? Who proposed this theory? 3. What is the difference between the terms genotype and phenotype? Are bacteria typically diploid or haploid? What d ...
It`s All in the Genes
... cancer will probably not develop the illness if he or she never smokes and breathes clean air. Intelligence is a good example of a characteristic that has many genetic and environmental influences. ...
... cancer will probably not develop the illness if he or she never smokes and breathes clean air. Intelligence is a good example of a characteristic that has many genetic and environmental influences. ...
Mr Men Variation and Inheritance
... What did we learn from this? • Children inherit features from their parents • If two parents have a certain characteristic then their child may show it even more (e.g. Mr Small + Little Miss Tiny = Mr Very Small!) • Some things such as glasses, scars and muscles we get from our environment, they a ...
... What did we learn from this? • Children inherit features from their parents • If two parents have a certain characteristic then their child may show it even more (e.g. Mr Small + Little Miss Tiny = Mr Very Small!) • Some things such as glasses, scars and muscles we get from our environment, they a ...
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).