Chromosomal Basis of Inheritance
... chromosome - medium sized chromosome with a large number of traits. Y chromosome - much smaller chromosome with only a few traits. ...
... chromosome - medium sized chromosome with a large number of traits. Y chromosome - much smaller chromosome with only a few traits. ...
ChromosomesII_post
... meiosis is abnormal. • Nondisjunction in a meristematic cell --> 36 chromosomes. • The cell is said to be allopolyploid (allotetraploid). • Normal meiosis! • These plants are self-fertile, so can produce offspring, even if there is only one such individual. • New “genus/species" was named Raphanobra ...
... meiosis is abnormal. • Nondisjunction in a meristematic cell --> 36 chromosomes. • The cell is said to be allopolyploid (allotetraploid). • Normal meiosis! • These plants are self-fertile, so can produce offspring, even if there is only one such individual. • New “genus/species" was named Raphanobra ...
3. Fundamentals of human genetics.methods of research of human
... certain molecular form of a gene) at corresponding loci on a pair of homologous chromosomes ...
... certain molecular form of a gene) at corresponding loci on a pair of homologous chromosomes ...
Chapter 15: Chromosomal Basis of Inheritance - Biology E
... trait for eye color was located on the chromosome that determines sex. Show this cross. The parental generation was a cross between a red-eyed female and a white-eyed male. The F1 generation, all the offspring of the P generation, had red eyes. The F2 generation showed a ratio of 3 red-eyed flies to ...
... trait for eye color was located on the chromosome that determines sex. Show this cross. The parental generation was a cross between a red-eyed female and a white-eyed male. The F1 generation, all the offspring of the P generation, had red eyes. The F2 generation showed a ratio of 3 red-eyed flies to ...
Sex Chromosomes
... If a female is ____________________ for a sex-linked trait, approximately _________ her cells will express one allele and the other half will express the other allele ...
... If a female is ____________________ for a sex-linked trait, approximately _________ her cells will express one allele and the other half will express the other allele ...
Document
... Karyograms are pictures of chromosomes from late prophase. Each chromosome in the picture are in their duplicated state. The karyograms are organized from largest chromosomes to smallest. Homologous Pairs: many species have two sets of chromosomes, one from each parent - paternal and maternal. A ...
... Karyograms are pictures of chromosomes from late prophase. Each chromosome in the picture are in their duplicated state. The karyograms are organized from largest chromosomes to smallest. Homologous Pairs: many species have two sets of chromosomes, one from each parent - paternal and maternal. A ...
Lecture 1. The subject and the main tasks of Medical Genetics
... he was also assigned to tend the gardens and grow vegetables for the monks to eat. ...
... he was also assigned to tend the gardens and grow vegetables for the monks to eat. ...
Background Information
... Problems in the number of chromosomes (called chromosomal abnormalities) can be detected in an organism. In order to do this, cells from the organism are grown in a laboratory. After the cells have reproduced a few times, they are treated with a chemical that stops cell division at the metaphase sta ...
... Problems in the number of chromosomes (called chromosomal abnormalities) can be detected in an organism. In order to do this, cells from the organism are grown in a laboratory. After the cells have reproduced a few times, they are treated with a chemical that stops cell division at the metaphase sta ...
Inheritance Patterns & Human Genetics
... Sickle cell trait results in normal & abnormal RBCs In US, 1 in 10 Americans of African descent are carriers Sickle cell anemia results in abnormal RBCs; causes intense ...
... Sickle cell trait results in normal & abnormal RBCs In US, 1 in 10 Americans of African descent are carriers Sickle cell anemia results in abnormal RBCs; causes intense ...
Autosomal & Chromosomal Disorders
... Most cases of DS are trisomy 21, however there are other types of DS (Mosaic and Translocation) . Often DS is associated with some impairment of cognitive ability and physical growth as well as facial appearance. The incidence of Down syndrome is estimated at 1 per 800 to 1,000 births, althoug ...
... Most cases of DS are trisomy 21, however there are other types of DS (Mosaic and Translocation) . Often DS is associated with some impairment of cognitive ability and physical growth as well as facial appearance. The incidence of Down syndrome is estimated at 1 per 800 to 1,000 births, althoug ...
Teacher notes and student sheets
... molecule of DNA. Chromosomes contain a large number of genes. All cells except sex cells, and red blood cells, contain two sets of chromosomes. Cb In sexual reproduction, a single specialised cell from a female merges with another specialised cell from a male. Each of these sex cells contains a rand ...
... molecule of DNA. Chromosomes contain a large number of genes. All cells except sex cells, and red blood cells, contain two sets of chromosomes. Cb In sexual reproduction, a single specialised cell from a female merges with another specialised cell from a male. Each of these sex cells contains a rand ...
Teacher notes and student sheets
... molecule of DNA. Chromosomes contain a large number of genes. All cells except sex cells, and red blood cells, contain two sets of chromosomes. Cb In sexual reproduction, a single specialised cell from a female merges with another specialised cell from a male. Each of these sex cells contains a rand ...
... molecule of DNA. Chromosomes contain a large number of genes. All cells except sex cells, and red blood cells, contain two sets of chromosomes. Cb In sexual reproduction, a single specialised cell from a female merges with another specialised cell from a male. Each of these sex cells contains a rand ...
Glossary of Terms - Liverpool Womens NHS Foundation Trust
... Refers to the small bodies that are responsible for energy production. Mitochondria also carry their own genes and DNA. MITOCHONDRIAL INHERITANCE The condition can only be transmitted by females in the maternal line. Typically a mitochondrial inherited condition can affect both sexes. MITOSIS Divisi ...
... Refers to the small bodies that are responsible for energy production. Mitochondria also carry their own genes and DNA. MITOCHONDRIAL INHERITANCE The condition can only be transmitted by females in the maternal line. Typically a mitochondrial inherited condition can affect both sexes. MITOSIS Divisi ...
Chromosomes
... • Can happen to either sperm or oocyte • Form one gamete with two copies of same chromosome • Other gamete with zero copies of that chromosome • Different outcomes if happens at first or second stage of Meiosis ...
... • Can happen to either sperm or oocyte • Form one gamete with two copies of same chromosome • Other gamete with zero copies of that chromosome • Different outcomes if happens at first or second stage of Meiosis ...
Types of Chromosome Mutations
... Wild-type allele is no longer wild-type in its expression in some of the eye facets. Any chromosomal change that places a locus next to heterochromatin can result in inactivation of that gene. ...
... Wild-type allele is no longer wild-type in its expression in some of the eye facets. Any chromosomal change that places a locus next to heterochromatin can result in inactivation of that gene. ...
Karyotype
... Determining the sex of a zygote: • Always determined by the father. • All eggs contain one X chromosome • Sperm either contain one X chromosome or one Y chromosome. ...
... Determining the sex of a zygote: • Always determined by the father. • All eggs contain one X chromosome • Sperm either contain one X chromosome or one Y chromosome. ...
Chapter 4 Lesson 2 (pg182-190) Modeling Inheritance • Punnett
... Three alleles (instead two alleles) You only get two alleles (one from each parent), but because there are three allele options, there are actually four blood types that can be created Phenotype Possible Genotypes Blood Type A AA or Ai Blood Type B BB or Bi Blood Type AB AB Blood Type O ii Sex-L ...
... Three alleles (instead two alleles) You only get two alleles (one from each parent), but because there are three allele options, there are actually four blood types that can be created Phenotype Possible Genotypes Blood Type A AA or Ai Blood Type B BB or Bi Blood Type AB AB Blood Type O ii Sex-L ...
Mendel’s Legacy
... another and makes a new codon • Sickle cell anemia- adenine is substituted for thymine ...
... another and makes a new codon • Sickle cell anemia- adenine is substituted for thymine ...
Sex-Influenced Traits
... Draw a punnett square using X and Y as the alleles contributed by the mom and dad. ...
... Draw a punnett square using X and Y as the alleles contributed by the mom and dad. ...
Notes
... Ex: sickle-cell anemia (single recessive allele on both homologues) causes formation of abnormal hemoglobin which in turn causes: breakdown of red blood cells, clumping of cells & clogging of small blood vessels, accumulation of ...
... Ex: sickle-cell anemia (single recessive allele on both homologues) causes formation of abnormal hemoglobin which in turn causes: breakdown of red blood cells, clumping of cells & clogging of small blood vessels, accumulation of ...
Chapt 7 Beyond Mendel
... Which X gets inactivated? One or other of X becomes inactivated in early development. Within each cell, which X becomes inactivated is random. As development proceeds, all cells arising by cell division after that time have same X inactivated. Female becomes a mosaic ...
... Which X gets inactivated? One or other of X becomes inactivated in early development. Within each cell, which X becomes inactivated is random. As development proceeds, all cells arising by cell division after that time have same X inactivated. Female becomes a mosaic ...
Document
... Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plasmids or other extrachromosomal genetic elements. • Chromosomes vary widely between different ...
... Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plasmids or other extrachromosomal genetic elements. • Chromosomes vary widely between different ...
Sex Determination
... If an individual has a mutation such that the testes do not secrete testosterone or the testosterone receptor is non-functional, the internal structures and gonads will develop into male structures, but the external genitalia will be female. These individuals are sterile and will not go through pube ...
... If an individual has a mutation such that the testes do not secrete testosterone or the testosterone receptor is non-functional, the internal structures and gonads will develop into male structures, but the external genitalia will be female. These individuals are sterile and will not go through pube ...
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.)