1 The Chromosomal Basis Of Inheritance
... with white eyes (mutant) with female flies with red eyes (wild type) – The F1 generation all had red eyes – The F2 generation showed the 3:1 red:white eye ...
... with white eyes (mutant) with female flies with red eyes (wild type) – The F1 generation all had red eyes – The F2 generation showed the 3:1 red:white eye ...
relates Mendel`s discoveries to actual behavior of chromosomes
... c. Much more common when abnormal chromosome is inherited from the mother rather than the father, which shows consistency with its being more common in males—if he receives a fragile X chromosome, it has to be from mother d. Abnormal because maternal imprint causes syndrome rather than silence it Ex ...
... c. Much more common when abnormal chromosome is inherited from the mother rather than the father, which shows consistency with its being more common in males—if he receives a fragile X chromosome, it has to be from mother d. Abnormal because maternal imprint causes syndrome rather than silence it Ex ...
File - NCEA Level 2 Biology
... gamete to produce a triploid (3N) zygote, or even two diploid gametes producing a tetraploid (4N) zygote. These types of chromosomal non-disjunctions are the result of all homologous chromosomes not separating during meiosis with one gamete having all (2N) chromosomes and the others having none. Pol ...
... gamete to produce a triploid (3N) zygote, or even two diploid gametes producing a tetraploid (4N) zygote. These types of chromosomal non-disjunctions are the result of all homologous chromosomes not separating during meiosis with one gamete having all (2N) chromosomes and the others having none. Pol ...
Name
... chromosomes is number 1; the next largest pair is number 2, and so forth. See illustration on the back. Collectively chromosome pairs 1 through 22 make up your autosomes chromosomes that contain genes for characteristics not directly related to the sex of an organism. But what about the 23rd chromos ...
... chromosomes is number 1; the next largest pair is number 2, and so forth. See illustration on the back. Collectively chromosome pairs 1 through 22 make up your autosomes chromosomes that contain genes for characteristics not directly related to the sex of an organism. But what about the 23rd chromos ...
Chapter 24
... allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid (rather than a n ...
... allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid (rather than a n ...
Nutrition and Gene Expression Jan 29, 2015
... Problems in newborns from simple mutations are less common. The mutation rate is very low: the genes that a child inherits usually only differ at about 100 base pairs, from the genes in the parental DNA. Most of those sequence changes are harmless. ...
... Problems in newborns from simple mutations are less common. The mutation rate is very low: the genes that a child inherits usually only differ at about 100 base pairs, from the genes in the parental DNA. Most of those sequence changes are harmless. ...
Chapter 24
... over any other allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid ( ...
... over any other allele. This can be seen in sickle cell disease. In codominance, the different alleles are both expressed. This can be seen in ABO blood types. The most drastic upset in chromosome number is an entire extra set, a condition called polyploidy. This results from formation of a diploid ( ...
Inheritance
... Assortment leads to many possibilities as far as gamete formation goes. For any genome it can be calculated as 2n, where n=the number of chromosome pairs. ...
... Assortment leads to many possibilities as far as gamete formation goes. For any genome it can be calculated as 2n, where n=the number of chromosome pairs. ...
Chapter 7: Extending Mendelian Genetics
... Sex-Linked Traits • Genes located on the sex chromosomes (X or Y) are called sex-linked genes • Genes on the Y chromosome are responsible for male characteristics only • X chromosome has many more genes that affect many traits • In males, all sex-linked traits are expressed – they only have one cop ...
... Sex-Linked Traits • Genes located on the sex chromosomes (X or Y) are called sex-linked genes • Genes on the Y chromosome are responsible for male characteristics only • X chromosome has many more genes that affect many traits • In males, all sex-linked traits are expressed – they only have one cop ...
Chapter 9 I am - Mrs Smith`s Biology
... I am the type of sex chromosomes that a human male possesses where only part of one chromosome is homologous to the other chromosome ...
... I am the type of sex chromosomes that a human male possesses where only part of one chromosome is homologous to the other chromosome ...
Title - Iowa State University
... 1. What are the three similarities between chromosome behavior and Mendel’s factors? a) Both are present in pairs in diploid cells b) Homologous chromosomes separate and factors segregate during meiosis c) Fertilization restores the paired condition of both factors and chromosomes 2. The ___________ ...
... 1. What are the three similarities between chromosome behavior and Mendel’s factors? a) Both are present in pairs in diploid cells b) Homologous chromosomes separate and factors segregate during meiosis c) Fertilization restores the paired condition of both factors and chromosomes 2. The ___________ ...
More detail on linkage and Morgan
... This results from multiple crossing over events. – A second crossing over “cancels out” the first and reduces the observed number of recombinant offspring. – Genes father apart (for example, b-vg) are more likely to experience multiple crossing over events. ...
... This results from multiple crossing over events. – A second crossing over “cancels out” the first and reduces the observed number of recombinant offspring. – Genes father apart (for example, b-vg) are more likely to experience multiple crossing over events. ...
AP Biology Study Guide Chapter 8: Monohybrid cross Law
... Ø Recombinant frequencies can be used to make genetic maps Ø Many genes on the X chromosome are not present on the Y chromosome Ø Chromosome pairs similar in size – autosomes § Different size ...
... Ø Recombinant frequencies can be used to make genetic maps Ø Many genes on the X chromosome are not present on the Y chromosome Ø Chromosome pairs similar in size – autosomes § Different size ...
Linked genes
... • Body color and wing size must usually be inherited together, and therefore be located on the same chromosome. • However – nonparental phenotypes were also produced, suggesting that body color and wing size genes are only partially linked genetically. (see p.278,279) ...
... • Body color and wing size must usually be inherited together, and therefore be located on the same chromosome. • However – nonparental phenotypes were also produced, suggesting that body color and wing size genes are only partially linked genetically. (see p.278,279) ...
X Chromosome
... – The expression of genes on the sex chromosomes differs from the expression of autosomal genes. – Genes located on the sex chromosomes are called sexlinked genes or X-linked genes. – Males express all of the alleles on both sex chromosomes. – In females one of the two X chromosomes is randomly turn ...
... – The expression of genes on the sex chromosomes differs from the expression of autosomal genes. – Genes located on the sex chromosomes are called sexlinked genes or X-linked genes. – Males express all of the alleles on both sex chromosomes. – In females one of the two X chromosomes is randomly turn ...
Patterns of inheritance
... If the phenotype associated with a given version of a gene is observed only when an individual has two copies, the allele is said to be autosomal recessive. The phenotype will be observed only when the individual is homozygous for the allele concerned. An individual with only one copy of the allele ...
... If the phenotype associated with a given version of a gene is observed only when an individual has two copies, the allele is said to be autosomal recessive. The phenotype will be observed only when the individual is homozygous for the allele concerned. An individual with only one copy of the allele ...
Document
... • Mendel studied autosomal gene traits, like hair texture. Autosome – chromosome with genes not related to sex of organism (body cells) ...
... • Mendel studied autosomal gene traits, like hair texture. Autosome – chromosome with genes not related to sex of organism (body cells) ...
Biol 211 (2) Chapter 13 KEY
... 3. What is the difference between genes and alleles?! 1. A gene is a section of DNA that encodes information, while alleles are different versions of the same gene. ! 4. Briefly describe the different processes in Meiosis—Meiosis I and Meiosis II.! 1. During Meiosis I, the diploid parent cell produc ...
... 3. What is the difference between genes and alleles?! 1. A gene is a section of DNA that encodes information, while alleles are different versions of the same gene. ! 4. Briefly describe the different processes in Meiosis—Meiosis I and Meiosis II.! 1. During Meiosis I, the diploid parent cell produc ...
Genes - Bill Nye
... 1. You get your genes from your _____________________. 2. Your body is made of ______________. 3. DNA is shaped like a _____________________________. 4. ____________ is the chemical genes are made of. 5. _________________ of genes are joined together to make a chromosome. 6. If you uncoil chromosome ...
... 1. You get your genes from your _____________________. 2. Your body is made of ______________. 3. DNA is shaped like a _____________________________. 4. ____________ is the chemical genes are made of. 5. _________________ of genes are joined together to make a chromosome. 6. If you uncoil chromosome ...
Mammalian X-chromosome inactivation
... Sex chromosomes and sex linkage: In Drosophila, it is the number of X's that determine sex while in mammals it is the presence or absence of a Y chromosome that determines sex. Homogametic sex- Producing gametes that contain one type of chromosome (females in mammals and insects, males in birds and ...
... Sex chromosomes and sex linkage: In Drosophila, it is the number of X's that determine sex while in mammals it is the presence or absence of a Y chromosome that determines sex. Homogametic sex- Producing gametes that contain one type of chromosome (females in mammals and insects, males in birds and ...
chapt13_lecture_anim_ppt
... the latest version of the Flash Player, which is available at http://get.adobe.com/flashplayer. ...
... the latest version of the Flash Player, which is available at http://get.adobe.com/flashplayer. ...
Section 12-1
... VOCABULARY REVIEW 1. A sex chromosome contains genes that determine an individual’s sex. An autosome is a chromosome that is not directly involved in determining sex. 2. A germ-cell mutation occurs in one of an organism’s gametes; a somatic-cell mutation occurs in one of the other cells in an organi ...
... VOCABULARY REVIEW 1. A sex chromosome contains genes that determine an individual’s sex. An autosome is a chromosome that is not directly involved in determining sex. 2. A germ-cell mutation occurs in one of an organism’s gametes; a somatic-cell mutation occurs in one of the other cells in an organi ...
Chapter 5 - St. Ambrose School
... Genotype & Phenotype • Genotype – The alleles that are present ...
... Genotype & Phenotype • Genotype – The alleles that are present ...
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.)