Lecture 5 Mutation and Genetic Variation
... halteres (a structure that was derived from the second pair of wings in insects). C. The Limits of Mutations. 1. Even the most drastic mutation can only alter one or more pre-existing traits. 2. Mutations with phenotypic effects alter developmental processes, but they cannot alter developmental foun ...
... halteres (a structure that was derived from the second pair of wings in insects). C. The Limits of Mutations. 1. Even the most drastic mutation can only alter one or more pre-existing traits. 2. Mutations with phenotypic effects alter developmental processes, but they cannot alter developmental foun ...
File - Mr. Haan`s Science
... 1) Traits are passed down as genes 2) Organisms inherit 2 copies of each gene – one from each parent 3) 2 copies segregate during gamete formation ...
... 1) Traits are passed down as genes 2) Organisms inherit 2 copies of each gene – one from each parent 3) 2 copies segregate during gamete formation ...
What are dominant genes?
... An organism’s characteristics are passed on from generation to generation through inheritance of genes. Genes are found along the threadlike structures called chromosomes. Chromosomes - The cell’s nucleus contains chromosomes made from long DNA molecules. The diagram shows the relationship between t ...
... An organism’s characteristics are passed on from generation to generation through inheritance of genes. Genes are found along the threadlike structures called chromosomes. Chromosomes - The cell’s nucleus contains chromosomes made from long DNA molecules. The diagram shows the relationship between t ...
Biology-Chapter-12
... 22 pairs of chromosomes are autosomes-they all look alike The 23rd pair is the sex chromosome –indicating the sex of the organism Sex-linked traits-Traits are contained on the sex determined pair of chromosomes Thomas Hunt Morgan (1910) discovered that fruit flies had sex-linked traits Most ...
... 22 pairs of chromosomes are autosomes-they all look alike The 23rd pair is the sex chromosome –indicating the sex of the organism Sex-linked traits-Traits are contained on the sex determined pair of chromosomes Thomas Hunt Morgan (1910) discovered that fruit flies had sex-linked traits Most ...
Notes
... Examples: ___________________________________, _______________________________, _______________________________ 6. Sex Chromosomes The __________________ pair of chromosomes are known as the sex chromosomes. They carry genes that determine whether a person is _________________________________ ...
... Examples: ___________________________________, _______________________________, _______________________________ 6. Sex Chromosomes The __________________ pair of chromosomes are known as the sex chromosomes. They carry genes that determine whether a person is _________________________________ ...
mendelian genetics vocabulary
... 24. Pleiotropy: when one gene influences multiple phenotypic traits. 25. Polymorphic gene: condition in wich a gene is represented by more than one allele. 26. Probability: the likelihood that a specific event will occur. Probability is usually expressed as the ratio of the number of actual occurren ...
... 24. Pleiotropy: when one gene influences multiple phenotypic traits. 25. Polymorphic gene: condition in wich a gene is represented by more than one allele. 26. Probability: the likelihood that a specific event will occur. Probability is usually expressed as the ratio of the number of actual occurren ...
Leukaemia Section B-cell prolymphocytic leukemia (B-PLL) Atlas of Genetics and Cytogenetics
... are the most commonly observed and are often the consequence of a translocation t(11;14)(q13;q32); structural abnormalities of chromosome 6 are primary or secondary; deletion 6q, as well as translocation t(6;12)(q15;p13) are described; structural aberrations of chromosome 1 involve both p and q arms ...
... are the most commonly observed and are often the consequence of a translocation t(11;14)(q13;q32); structural abnormalities of chromosome 6 are primary or secondary; deletion 6q, as well as translocation t(6;12)(q15;p13) are described; structural aberrations of chromosome 1 involve both p and q arms ...
LECTURE OUTLINE
... Sometimes individuals are born with either too many or too few chromosomes, most likely due to nondisjunction during meiosis. Nondisjunction occurs during meiosis when either the homologous pair or the sister chromatids fail to separate. Down Syndrome The most common autosomal trisomy seen among hum ...
... Sometimes individuals are born with either too many or too few chromosomes, most likely due to nondisjunction during meiosis. Nondisjunction occurs during meiosis when either the homologous pair or the sister chromatids fail to separate. Down Syndrome The most common autosomal trisomy seen among hum ...
What are rare chromosome disorders?
... • Chromosome 1 is the largest, with 22 the smallest. The 23rd pair are the sex chromosomes (males = XY, females = XX) ...
... • Chromosome 1 is the largest, with 22 the smallest. The 23rd pair are the sex chromosomes (males = XY, females = XX) ...
Cancer genetics, cytogenetics—defining the enemy within
... Indeed, at the cellular level, tumor forogy, I not surprisingly found myself attracted to pediatrics and, after an ‘awakening’ experience on mation is very rare, with a Poisson mean of just three tumors the pediatric unit at the Memorial-Sloan Kettering Cancer per patient, yet millions of target cel ...
... Indeed, at the cellular level, tumor forogy, I not surprisingly found myself attracted to pediatrics and, after an ‘awakening’ experience on mation is very rare, with a Poisson mean of just three tumors the pediatric unit at the Memorial-Sloan Kettering Cancer per patient, yet millions of target cel ...
The chromosomal theory of inheritance
... genome of that organism and contains a complete set of the genes characteristic of that organism. Sexually reproducing organisms in both the plant and animal kingdoms begin their development by the fusion of two haploid germ cells and are subsequently diploid (2n), with two sets of chromosomes in ea ...
... genome of that organism and contains a complete set of the genes characteristic of that organism. Sexually reproducing organisms in both the plant and animal kingdoms begin their development by the fusion of two haploid germ cells and are subsequently diploid (2n), with two sets of chromosomes in ea ...
NAME KIT # ______ Karyotyping Lab 1. a. Normally, how many
... Normally, how many chromosomes are found in a human sperm? _________ Normally, how many chromosomes are found in a human egg? ___________ Normally, how many chromosomes are found in a human baby? __________ How many chromosomes are found in the “baby” you created in this lab? ___ ...
... Normally, how many chromosomes are found in a human sperm? _________ Normally, how many chromosomes are found in a human egg? ___________ Normally, how many chromosomes are found in a human baby? __________ How many chromosomes are found in the “baby” you created in this lab? ___ ...
Meiosis ppt
... • The cell divides • The result is two daughter cells. • Each daughter cell is haploid. • The daughter cells are not genetically identical ...
... • The cell divides • The result is two daughter cells. • Each daughter cell is haploid. • The daughter cells are not genetically identical ...
LCI Grants Program - University of Colorado Denver
... Does overexpression of one or a few genes result in development of DS-related phenotypes? ...
... Does overexpression of one or a few genes result in development of DS-related phenotypes? ...
Karyotyping Lab:
... Normally, how many chromosomes are found in a human sperm? _________ Normally, how many chromosomes are found in a human egg? ___________ Normally, how many chromosomes are found in a human baby? __________ How many chromosomes are found in the “baby” you created in this lab? ___ ...
... Normally, how many chromosomes are found in a human sperm? _________ Normally, how many chromosomes are found in a human egg? ___________ Normally, how many chromosomes are found in a human baby? __________ How many chromosomes are found in the “baby” you created in this lab? ___ ...
Making Reebops: a model for meiosis
... parents at fertilisation. Offspring are still of the same type as their parents, because they contain information about the same structures, but the detail of that information is different in each gamete (because of the random selection of one from each pair of chromosomes) and therefore different a ...
... parents at fertilisation. Offspring are still of the same type as their parents, because they contain information about the same structures, but the detail of that information is different in each gamete (because of the random selection of one from each pair of chromosomes) and therefore different a ...
Gen 305, Presentation 5, 16
... Therefore, the s and e genes are 12.3 map units apart from each other along the same chromosome Copyright ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display ...
... Therefore, the s and e genes are 12.3 map units apart from each other along the same chromosome Copyright ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display ...
B. Sex-Linked Disorders
... because individuals lack __________________. 2nd sex chromosome _______, female typically ______ short in stature, underdeveloped sexually, sterile with a normal life ______, expectancy. ...
... because individuals lack __________________. 2nd sex chromosome _______, female typically ______ short in stature, underdeveloped sexually, sterile with a normal life ______, expectancy. ...
MEIOSIS - Oakland-Craig Public School
... 3. Trisomy example a. Down syndrome (extra 21st chromosome) 4. Monosomy example a. Turner’s syndrome (missing X chromosome) ...
... 3. Trisomy example a. Down syndrome (extra 21st chromosome) 4. Monosomy example a. Turner’s syndrome (missing X chromosome) ...
Reebop Lab - The Green Isle
... 5. The "father" should arbitrarily take one green chromosome from each pair and put it in a pile called "sperm." E) Is the sperm diploid or haploid? ________________ F) What type of cell division makes sperm (mitosis or meiosis)? ___________ 6. The "mother" should arbitrarily take one red chromosome ...
... 5. The "father" should arbitrarily take one green chromosome from each pair and put it in a pile called "sperm." E) Is the sperm diploid or haploid? ________________ F) What type of cell division makes sperm (mitosis or meiosis)? ___________ 6. The "mother" should arbitrarily take one red chromosome ...
solution
... 3. How many possible ways can 22 genes combine to make gametes? 4. Each time we add a gene it doubles what we had. So 2 genes were 2 x 2 = 22 = 4, 3 genes is 4 x 2 = 23 = 8 and so on until we get to 22 genes. That’s 222= 4, 194,304 unique combinations. That’s just possible sperm or eggs. Combine tho ...
... 3. How many possible ways can 22 genes combine to make gametes? 4. Each time we add a gene it doubles what we had. So 2 genes were 2 x 2 = 22 = 4, 3 genes is 4 x 2 = 23 = 8 and so on until we get to 22 genes. That’s 222= 4, 194,304 unique combinations. That’s just possible sperm or eggs. Combine tho ...
Y chromosome
The Y chromosome is one of two sex chromosomes (allosomes) in mammals, including humans, and many other animals. The other is the X chromosome. Y is the sex-determining chromosome in many species, since it is the presence or absence of Y that determines the male or female sex of offspring produced in sexual reproduction. In mammals, the Y chromosome contains the gene SRY, which triggers testis development. The DNA in the human Y chromosome is composed of about 59 million base pairs. The Y chromosome is passed only from father to son. With a 30% difference between humans and chimpanzees, the Y chromosome is one of the fastest evolving parts of the human genome. To date, over 200 Y-linked genes have been identified. All Y-linked genes are expressed and (apart from duplicated genes) hemizygous (present on only one chromosome) except in the cases of aneuploidy such as XYY syndrome or XXYY syndrome. (See Y linkage.)