Mitosis, Meiosis and Fertilization Teacher Prep Notes
... To demonstrate fertilization (and in most other demonstrations), it works best to lay the chromosomes out on the table, so students can more easily see the multiple different possible combinations. We recommend that this activity be followed by our Genetics activity, so the students will see how und ...
... To demonstrate fertilization (and in most other demonstrations), it works best to lay the chromosomes out on the table, so students can more easily see the multiple different possible combinations. We recommend that this activity be followed by our Genetics activity, so the students will see how und ...
Chi-Square Analysis
... A monosomic zygote has only one copy of a particular chromosome A trisomic zygote has three copies of a particular chromosome Aneuploidy: incorrect # chromosomes Monosomy (1 copy) or Trisomy (3 copies) Polyploidy: 2+ complete sets of chromosomes; 3n or 4n o Rare in animals, frequent in pla ...
... A monosomic zygote has only one copy of a particular chromosome A trisomic zygote has three copies of a particular chromosome Aneuploidy: incorrect # chromosomes Monosomy (1 copy) or Trisomy (3 copies) Polyploidy: 2+ complete sets of chromosomes; 3n or 4n o Rare in animals, frequent in pla ...
CHAPTER 10 notes
... • BODY (autosomal/somatic) cells reproduce by mitosis • some organisms do also, but we will talk about that later! ...
... • BODY (autosomal/somatic) cells reproduce by mitosis • some organisms do also, but we will talk about that later! ...
b - nnhschen
... Microtubule chromosomes attached to Chromatin separate kinetochore Pairs of homologous Chromosomes duplicate Tertads line up Homologous chromosomes chromosomes split up (red and blue) pair and exchange segments; 2n = 6 in this example ...
... Microtubule chromosomes attached to Chromatin separate kinetochore Pairs of homologous Chromosomes duplicate Tertads line up Homologous chromosomes chromosomes split up (red and blue) pair and exchange segments; 2n = 6 in this example ...
Meiosis and Genetic Variation
... • In humans, there are 23 pairs of chromosomes and each pair lines up independently during meiosis 1. – As a result, in one human sex cell there are approximately 8 million different possible combinations of chromosomes (223). – Sexual reproduction, fertilization, produces offspring from the random ...
... • In humans, there are 23 pairs of chromosomes and each pair lines up independently during meiosis 1. – As a result, in one human sex cell there are approximately 8 million different possible combinations of chromosomes (223). – Sexual reproduction, fertilization, produces offspring from the random ...
The Process of Meiosis
... homolog. This is why normal organismsalways have an even number of chromosomes. One homolog you received from your mother, the other you received from your father. They are not exactly alike, but they are the same size, shape, and have the same banding pattern. ...
... homolog. This is why normal organismsalways have an even number of chromosomes. One homolog you received from your mother, the other you received from your father. They are not exactly alike, but they are the same size, shape, and have the same banding pattern. ...
Document
... 22. An organism’s physical appearance is its phenotype. 23. The sex cells produced by meiosis have twice the number of chromosomes as the parent cells. 24. The number of four DNA nitrogen bases forms a genetic code for one amino acid. 25. Transfer RNA carries coded messages from the nucleus to the ...
... 22. An organism’s physical appearance is its phenotype. 23. The sex cells produced by meiosis have twice the number of chromosomes as the parent cells. 24. The number of four DNA nitrogen bases forms a genetic code for one amino acid. 25. Transfer RNA carries coded messages from the nucleus to the ...
Genetics Lecture 11 Mutations Mutations
... phenotypic characteristics may be present in trisomy 21, but any single affected individual usually exhibits only a subset of these. • In the case of Down syndrome, there are 12 to 14 such characteristics, with each individual, on average, expressing 6 to 8 of them. • Nevertheless, the outward ...
... phenotypic characteristics may be present in trisomy 21, but any single affected individual usually exhibits only a subset of these. • In the case of Down syndrome, there are 12 to 14 such characteristics, with each individual, on average, expressing 6 to 8 of them. • Nevertheless, the outward ...
Biology Study Guide/Test Review CH 11
... Define CROSSING OVER and be sure you understand the diagram of crossing over! Unlike mitosis, meiosis results in the formation of __________________ genetically _____________ cells. Gametes are produced by the process of ___________________. An organisms gametes have ________________ the # of chromo ...
... Define CROSSING OVER and be sure you understand the diagram of crossing over! Unlike mitosis, meiosis results in the formation of __________________ genetically _____________ cells. Gametes are produced by the process of ___________________. An organisms gametes have ________________ the # of chromo ...
Biology - TeacherWeb
... The process of converting the information in a sequence of nitrogenous bases in mRNA into a sequence of amino acids in protein 33. What is mutations? Any change or error in the DNA sequence 34. Explain how mutations in body cells cause damage. If the cell’s DNA is changed, the mutation would be pass ...
... The process of converting the information in a sequence of nitrogenous bases in mRNA into a sequence of amino acids in protein 33. What is mutations? Any change or error in the DNA sequence 34. Explain how mutations in body cells cause damage. If the cell’s DNA is changed, the mutation would be pass ...
CHAPTER 13
... result of the combination of chromosomes from our father and mother - we inherit 23 chromosomes from each parent Sperm cells and ova are called GAMETES - each of these cells has 22 autosomes plus 2 sex chromosomes - these are called HAPLOID CELLS because they have a single chromosome set ...
... result of the combination of chromosomes from our father and mother - we inherit 23 chromosomes from each parent Sperm cells and ova are called GAMETES - each of these cells has 22 autosomes plus 2 sex chromosomes - these are called HAPLOID CELLS because they have a single chromosome set ...
Chapter 24: Patterns of Chromosome Inheritance
... Muscular dystrophy is characterized by the wasting of muscles. The most common form is Duchenne muscular dystrophy; this is an X-linked disorder, occurring in 1 of 3,600 males. Muscles weaken, frequent falls and difficulty in rising occur early; death occurs by age 20. ...
... Muscular dystrophy is characterized by the wasting of muscles. The most common form is Duchenne muscular dystrophy; this is an X-linked disorder, occurring in 1 of 3,600 males. Muscles weaken, frequent falls and difficulty in rising occur early; death occurs by age 20. ...
molecular and genetic testing for leukemia
... Creating an elongated chromosome 9 (der 9), and a truncated chromosome 22 (the Philadelphia chromosome) The oncogenic BCR-ABL gene fusion is located on the shorter derivative 22 chromosome ...
... Creating an elongated chromosome 9 (der 9), and a truncated chromosome 22 (the Philadelphia chromosome) The oncogenic BCR-ABL gene fusion is located on the shorter derivative 22 chromosome ...
Meiosis - Groby Bio Page
... We call these cells DIPLOID. It means that each body cell contains two of each chromosome – one from mum and one from dad. Gametes though, have half the normal number of chromosomes And this might be explained as just ‘n’. ...
... We call these cells DIPLOID. It means that each body cell contains two of each chromosome – one from mum and one from dad. Gametes though, have half the normal number of chromosomes And this might be explained as just ‘n’. ...
Jeopardy
... Cancer is an example of… A) the effect of a genetic mutation in body cells B) a Trait that shows continuous variation C) a recessive trait D) a dominant trait ...
... Cancer is an example of… A) the effect of a genetic mutation in body cells B) a Trait that shows continuous variation C) a recessive trait D) a dominant trait ...
MITOSIS COLORING HOMEWORK
... visible. At this time the cell grows, the DNA replicates and organelles grow in preparation for cell division. Color the centrioles red and the nuclear membrane yellow. Shade the chromatin blue. 2. Prophase. This is the first step of mitosis. The nuclear membrane breaks apart and the chromatin conde ...
... visible. At this time the cell grows, the DNA replicates and organelles grow in preparation for cell division. Color the centrioles red and the nuclear membrane yellow. Shade the chromatin blue. 2. Prophase. This is the first step of mitosis. The nuclear membrane breaks apart and the chromatin conde ...
Mutation PPT
... translation, the insertion or deletion may alter the reading frame (triplet grouping) of the gene • All the nucleotides that are downstream of the deletion or insertion will be improperly grouped into codons ...
... translation, the insertion or deletion may alter the reading frame (triplet grouping) of the gene • All the nucleotides that are downstream of the deletion or insertion will be improperly grouped into codons ...
A picture of the chromosomes from one cell. Cells with homologous
... The diploid body cells of an organism ...
... The diploid body cells of an organism ...
Chromosome number 2
... ◦ ii. Normal transmitting carrier males, their daughters, and some other carrier females have 55 to 200 copies but do not show symptoms. ◦ iii.Individuals with fragile X syndrome have 200 to 1,300 copies, indicating that tandem amplification of this sequence is tolerated until a threshold number of ...
... ◦ ii. Normal transmitting carrier males, their daughters, and some other carrier females have 55 to 200 copies but do not show symptoms. ◦ iii.Individuals with fragile X syndrome have 200 to 1,300 copies, indicating that tandem amplification of this sequence is tolerated until a threshold number of ...
From Mendel to DNA
... 1. How is sex determined in humans? 2. Can you predict what features a child might inherit? ...
... 1. How is sex determined in humans? 2. Can you predict what features a child might inherit? ...
Ii.
... ◦ i. Normal individuals have 6 to 54 CGG repeats, with an average of 29. ◦ ii. Normal transmitting carrier males, their daughters, and some other carrier females have 55 to 200 copies but do not show symptoms. ◦ iii.Individuals with fragile X syndrome have 200 to 1,300 copies, indicating that tandem ...
... ◦ i. Normal individuals have 6 to 54 CGG repeats, with an average of 29. ◦ ii. Normal transmitting carrier males, their daughters, and some other carrier females have 55 to 200 copies but do not show symptoms. ◦ iii.Individuals with fragile X syndrome have 200 to 1,300 copies, indicating that tandem ...
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.