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detailed lecture outline
detailed lecture outline

... the number of blastomeres increases, the timing becomes less predictable. After three days of cleavage, the pre-embryo is a solid ball of cells resembling a mulberry. This stage is called the morula.  The morula typically reaches the uterus on day 4. Over the next two days, the blastomeres form a b ...
Blog resource: http://tinyurl
Blog resource: http://tinyurl

... 9. Describe what you can see in this image. ...
Expert meeting: David Clayton
Expert meeting: David Clayton

... Reproductions have been recorded for O. ventralis (4) and O. nasuta (3). Important to keep in mind that the set-up for both species is somewhat different: for O. ventralis, one male is present in the tank, for O. nasuta 3 males are present. Based on the literature on fish behavior, some behaviours w ...
Background information for Sexual Reproduction
Background information for Sexual Reproduction

... •Crossing over can occur at any location on a chromosome, and it can occur at several locations at the same time. •Genetic recombination results from crossing over during prophase I and metaphase 1 of meiosis –This increases variation further ...
Genome assemblies
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... A whole genome shot gun sequence assembly of Chinese Spring was carried out using nested long mate-pair libraries alongside a modified version of the DISCOVAR algorithm for assembly. This method created an assembly of total length 13.4 Gb, with approximately 10x longer N50 than the CSS and W7984 ass ...
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... TEKS FOCUS: 6E Compare the processes of mitosis and meiosis and their significance to sexual and asexual reproduction ...
Section 11–4 Meiosis
Section 11–4 Meiosis

... TEKS FOCUS: 6E Compare the processes of mitosis and meiosis and their significance to sexual and asexual reproduction ...
hereditary diseases of a man - Ставропольская Государственная
hereditary diseases of a man - Ставропольская Государственная

... crop in the adjacent fields. In the successive generations, this trait was transferred and a line was developed where all sheep had short legs. This character resulted from a recessive mutation and the short-legged individuals were homozygous recessive. Once this mutation occurred in a particular ce ...
Phenotype/Genotype Phenotype/Genotype cont. The sickle cell
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... recombination event and excise the phage from the host genome, restoring it to the circular vegetative map, and the phage then enters the lytic cycle. This process is called induction. Apart from DNA damage, spontaneous induction occurs at low levels. During the lytic phase, λ undergoes two replicat ...
10.2-Heredity (Mendel)
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...  peas reproduce sexually, with egg & sperm  sperm is transferred to egg by pollination – he could control in a lab to do an experiment ...
Gene Section IGK (Immunoglobulin Kappa) Atlas of Genetics and Cytogenetics
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... immunoglobulin kappa chains. They result from the recombination (or rearrangement), at the DNA level, of two genes: IGKV and IGKJ, with deletion of the intermediary DNA to create a rearranged IGKV-J gene. The rearranged IGKV-J gene is transcribed with the IGKC gene and translated into an immunoglobu ...
UNIT 6 Targets- Patterns_of_Inheritance
UNIT 6 Targets- Patterns_of_Inheritance

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sex chromosomes are conserved across iguanas
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... chromosomes in iguanas evolved in the Cretaceous period and, with the exception of basilisks, have been conserved across iguana evolution. (Online version in colour.) Basilisks were identified as the only group of iguanas where ACAX-linked genes showed a pattern typical for autosomal or pseudoautoso ...
Cretaceous park of sex determination: sex chromosomes are
Cretaceous park of sex determination: sex chromosomes are

... chromosomes in iguanas evolved in the Cretaceous period and, with the exception of basilisks, have been conserved across iguana evolution. (Online version in colour.) Basilisks were identified as the only group of iguanas where ACAX-linked genes showed a pattern typical for autosomal or pseudoautoso ...
Gene expression
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... measure mRNA abundance. The amount of steady state mRNA does not necessarily reflect transcriptional activity, translational activity, protein accumulation nor phenotypic expression. This is because transcription, mRNA stability and mRNA turnover affect message accumulation; translation, protein sta ...
test review - Liberty Union High School District
test review - Liberty Union High School District

... 29) What is the normal genotype of a female ________ 30) What is the normal genotype of a male ________ 31) What do we call traits that are carried on the X chromosome? ______________ 32) What is an example of a sex-linked Genotype of a Female? _______Male? _______ 33) How many alleles to men have f ...
identification of tendon and ligament specific genes
identification of tendon and ligament specific genes

... into muscle, bone and fat. These cells should also be able to differentiate into tendon or ligament fibroblasts, but the conditions necessary for this differentiation are not yet known. Also, there are few definitive markers available to verify that the stem cells have differentiated into tendon or ...
UCSC Genome Browser
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... There are no known genes in this region Only evidence is from hypothetical genes predicted by SGP and Genscan SGP predicted a larger gene with two exons There are also no known human mRNA or human ESTs in the aligned region However, there are ESTs from other organisms ...
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... The major part of patients di before 20 years, mainly from infectious complications of immune deficiency. 90% of patients have haematological abnormalities when 30 year-old, and bone marrow failure is the main cause of early morbidity in 71% of cases. It can evolve toward aplastic anemia or myelodys ...
File - Groby Bio Page
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...  Looking at one characteristic  Shows what the offspring genotypes could be  This first generation is known as F1 ...
meiosis_text_book
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... • Let’s start with an easier number and separate it. A fruit fly has 8 chromosomes total. 4 from mom and 4 from dad. These chromosomes are homologous, meaning that each of the 4 chromosomes that came from the male parent has a corresponding chromosome from the female ...
the fork line method - Warner Pacific College
the fork line method - Warner Pacific College

... – A normal male and an albino female have 6 normal children = mom (aa), dad (AA or Aa?) ...
Patterns of Inheritance
Patterns of Inheritance

... The pairs of alleles on homologous chromosomes separate, or segregate, from each other during meiosis. As a result, each gamete receives only one allele of each pair Mendel's law of independent assortment, states that allele pairs separate independently during the formation of gametes. This means th ...
Patterns of Heredity and Human Genetics
Patterns of Heredity and Human Genetics

... Hemophilia  X-linked disorder  Inability to clot.  Males inherit from carrier mothers.  Females need two recessive alleles.  Treated with transfusions, injecting blood clotting enzyme. ...
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X-inactivation



X-inactivation (also called lyonization) is a process by which one of the two copies of the X chromosome present in female mammals is inactivated. The inactive X chromosome is silenced by its being packaged in such a way that it has a transcriptionally inactive structure called heterochromatin. As nearly all female mammals have two X chromosomes, X-inactivation prevents them from having twice as many X chromosome gene products as males, who only possess a single copy of the X chromosome (see dosage compensation). The choice of which X chromosome will be inactivated is random in placental mammals such as humans, but once an X chromosome is inactivated it will remain inactive throughout the lifetime of the cell and its descendants in the organism. Unlike the random X-inactivation in placental mammals, inactivation in marsupials applies exclusively to the paternally derived X chromosome.
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