Consulta: creatorFacets:"Leitao, Alexandra" Registros recuperados
... Aneuploidy is the alteration of the normal diploid chromosome number. In the Pacific oyster, Crassostrea gigas, hypodiploid aneuploid cells have regularly been reported as has a negative correlation between this phenomenon and growth and evidence for a genetic basis. We previously demonstrated a pos ...
... Aneuploidy is the alteration of the normal diploid chromosome number. In the Pacific oyster, Crassostrea gigas, hypodiploid aneuploid cells have regularly been reported as has a negative correlation between this phenomenon and growth and evidence for a genetic basis. We previously demonstrated a pos ...
Genetic analysis of genes on the 4th chromosome of
... shows both the strength and weakness of old time genetics trying to disclose the nature of chromosome 4. To be able to see that chromosome 4 is acrocentric from the polytene chromosomes demands an enormous endurance, due to the small size of the left arm that almost always becomes embedded in the ch ...
... shows both the strength and weakness of old time genetics trying to disclose the nature of chromosome 4. To be able to see that chromosome 4 is acrocentric from the polytene chromosomes demands an enormous endurance, due to the small size of the left arm that almost always becomes embedded in the ch ...
Genetic and epigenetic risks of intracytoplasmic sperm injection
... disorders. Mouse models for the study of reproductive defects have been produced by spontaneous mutations, transgene integrations, retroviral infection of embryonic stem cells, ethylnitrosurea mutagenesis and gene targeting technology. Several genes required for vertebrate fertility are highly conse ...
... disorders. Mouse models for the study of reproductive defects have been produced by spontaneous mutations, transgene integrations, retroviral infection of embryonic stem cells, ethylnitrosurea mutagenesis and gene targeting technology. Several genes required for vertebrate fertility are highly conse ...
Future Generation Computer Systems
... times of the applications that must process the data. These differences may prevent some applications from completing because it would cause the makespan of the resource allocation to exceed Λ. Robust design for such systems involves determining a resource allocation that can account for uncertainty ...
... times of the applications that must process the data. These differences may prevent some applications from completing because it would cause the makespan of the resource allocation to exceed Λ. Robust design for such systems involves determining a resource allocation that can account for uncertainty ...
pdf
... RECOMBINATION OF DNA The previous chapter on mutation and repair of DNA dealt mainly with small changes in DNA sequence, usually single base pairs, resulting from errors in replication or damage to DNA. The DNA sequence of a chromosome can change in large segments as well, by the processes of recomb ...
... RECOMBINATION OF DNA The previous chapter on mutation and repair of DNA dealt mainly with small changes in DNA sequence, usually single base pairs, resulting from errors in replication or damage to DNA. The DNA sequence of a chromosome can change in large segments as well, by the processes of recomb ...
DYAD in meiotic chromosome organisation - Development
... region of genomic DNA which was then digested with a panel of restriction enzymes, and electrophoresed on a gel to identify polymorphisms between the Ler and No-O ecotypes and in some cases between Ler and Col-O. Recombinants north and south of dyad were first screened and identified with respect to ...
... region of genomic DNA which was then digested with a panel of restriction enzymes, and electrophoresed on a gel to identify polymorphisms between the Ler and No-O ecotypes and in some cases between Ler and Col-O. Recombinants north and south of dyad were first screened and identified with respect to ...
PPT File
... up of segments of DNA • Genes are passed to the next generation through reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • Most DNA is packaged into chromosomes ...
... up of segments of DNA • Genes are passed to the next generation through reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • Most DNA is packaged into chromosomes ...
Two distinct tumor suppressor loci within chromosome 11p15
... component (P = 0.016). DCIS of the breast is considered a pre-invasive stage of breast cancer and may be a precursor of infiltrating breast cancer (26). Although the number of tumors analyzed is small, the statistically significant association between LOH in region 1 and such tumors suggests the inv ...
... component (P = 0.016). DCIS of the breast is considered a pre-invasive stage of breast cancer and may be a precursor of infiltrating breast cancer (26). Although the number of tumors analyzed is small, the statistically significant association between LOH in region 1 and such tumors suggests the inv ...
Chapter 11 Complex Inheritance and Human Heredity
... learning disabilities and may enter menopause early or have cycle irregularities. Most have no affects from this. What union of gametes would have produced the above disorders? 4. XYY - Normal male, but may be taller than average. Controversy about these males being antisocial and aggressive and a l ...
... learning disabilities and may enter menopause early or have cycle irregularities. Most have no affects from this. What union of gametes would have produced the above disorders? 4. XYY - Normal male, but may be taller than average. Controversy about these males being antisocial and aggressive and a l ...
Ph1
... Incorrect pairing leads to unbalanced gametes and infertility How does wheat produce 4 haploid cells at the end of meiosis? ...
... Incorrect pairing leads to unbalanced gametes and infertility How does wheat produce 4 haploid cells at the end of meiosis? ...
GENETIC DISORDERS AND PEDIGREES
... erase all of the genotypes, and try another pattern of inheritance using new genotypes. Rule out each pattern of inheritance. It is a matter of exclusion. Occasionally, with the limited information available, more than one pattern of inheritance may be included as ‘possible’. ...
... erase all of the genotypes, and try another pattern of inheritance using new genotypes. Rule out each pattern of inheritance. It is a matter of exclusion. Occasionally, with the limited information available, more than one pattern of inheritance may be included as ‘possible’. ...
Dragon Investigations
... you can see that Sandy has two X chromosomes (the ones with f alleles), so Sandy is male. From “Two Dragon Genotypes” you can see that Pat has one X chromosome (the one with the F allele and one Y chromosome (the one with no genes on it), so Pat is female. For Question 2, from “Dragon Genetics” you ...
... you can see that Sandy has two X chromosomes (the ones with f alleles), so Sandy is male. From “Two Dragon Genotypes” you can see that Pat has one X chromosome (the one with the F allele and one Y chromosome (the one with no genes on it), so Pat is female. For Question 2, from “Dragon Genetics” you ...
Fundamentals of Genetics
... Mendel’s second conclusion is called the principle of dominance. This principle states that some alleles are dominant and others are recessive. An organism with at least one dominant allele for a particular form of a trait will exhibit that form of the trait. An organism with a recessive allele for ...
... Mendel’s second conclusion is called the principle of dominance. This principle states that some alleles are dominant and others are recessive. An organism with at least one dominant allele for a particular form of a trait will exhibit that form of the trait. An organism with a recessive allele for ...
meiosis and heredity
... 8. In the following list, pick the one that is not a source of genetic variability from meiosis and fertilization. a. recombination of homologous chromosomes b. segregation of chromosomes c. genes contained in the gametes that fuse to form a zygote d. recombination between sister chromatids e. physi ...
... 8. In the following list, pick the one that is not a source of genetic variability from meiosis and fertilization. a. recombination of homologous chromosomes b. segregation of chromosomes c. genes contained in the gametes that fuse to form a zygote d. recombination between sister chromatids e. physi ...
PREIMPLANTATION GENETIC DIAGNOSIS
... Stimulation and oocyte retrieval. The increasingly sophisticated technology available in the assisted reproduction clinic is harnessed to provide oocytes or embryos for genetic testing in PGD. Controlled stimulation of the ovaries with exogenous GONADOTROPHINS leads to the recruitment of many FOLLIC ...
... Stimulation and oocyte retrieval. The increasingly sophisticated technology available in the assisted reproduction clinic is harnessed to provide oocytes or embryos for genetic testing in PGD. Controlled stimulation of the ovaries with exogenous GONADOTROPHINS leads to the recruitment of many FOLLIC ...
Characteristics, causes and evolutionary consequences of male
... had evolved a reduced mutation rate, am estimates using Z–A, Z–W or A–W comparisons of chicken–turkey divergence do not differ significantly (Axelsson et al. 2004); had Z rate been reduced for other reasons than male-biased mutation, am estimated from Z–A and Z–W data would be lower than when estima ...
... had evolved a reduced mutation rate, am estimates using Z–A, Z–W or A–W comparisons of chicken–turkey divergence do not differ significantly (Axelsson et al. 2004); had Z rate been reduced for other reasons than male-biased mutation, am estimated from Z–A and Z–W data would be lower than when estima ...
Bonus, a Drosophila TIF1 homologue, is a chromatin
... and bon21B, a null allele (Fig. 1B) (BECKSTEAD et al. 2001). We observed that all bon434 and bon241 homozygous males died as first instar larvae, while all mutant females survived at least to the second instar larval stage. In contrast, a strong loss of function allele, bon21B, causes lethality in b ...
... and bon21B, a null allele (Fig. 1B) (BECKSTEAD et al. 2001). We observed that all bon434 and bon241 homozygous males died as first instar larvae, while all mutant females survived at least to the second instar larval stage. In contrast, a strong loss of function allele, bon21B, causes lethality in b ...
Sex Determination: Why So Many Ways of Doing It?
... While many unicellular organisms produce gametes of equal size (isogamy, see Box 1), sexual reproduction in most multicellular organisms has led to the evolution of female and male gametes differing in size (anisogamy), and often to the evolution of two separate sexes. Even though the outcome of sex ...
... While many unicellular organisms produce gametes of equal size (isogamy, see Box 1), sexual reproduction in most multicellular organisms has led to the evolution of female and male gametes differing in size (anisogamy), and often to the evolution of two separate sexes. Even though the outcome of sex ...
Sex Determination: Why So Many Ways of Doing It?
... While many unicellular organisms produce gametes of equal size (isogamy, see Box 1), sexual reproduction in most multicellular organisms has led to the evolution of female and male gametes differing in size (anisogamy), and often to the evolution of two separate sexes. Even though the outcome of sex ...
... While many unicellular organisms produce gametes of equal size (isogamy, see Box 1), sexual reproduction in most multicellular organisms has led to the evolution of female and male gametes differing in size (anisogamy), and often to the evolution of two separate sexes. Even though the outcome of sex ...
A catalogue of imprinted genes and parent-of
... from both alleles in the liver and choroid plexus. Similarly, the absence of imprinting in some tissues obviously does not exclude imprinting in other tissues. For example, the Angelman syndrome gene, UBE3A, was thought not to be imprinted until allele-specific transcription was detected in the brai ...
... from both alleles in the liver and choroid plexus. Similarly, the absence of imprinting in some tissues obviously does not exclude imprinting in other tissues. For example, the Angelman syndrome gene, UBE3A, was thought not to be imprinted until allele-specific transcription was detected in the brai ...
Genetics of mammalian meiosis: regulation, dynamics and impact
... (Mak), is not essential for fertility in mice12. Several studies have characterized the transcriptome during male meiosis in mice13,14, but regulators of the mam malian meiotic program remain largely unidentified. A major advance was the discovery that the onset of meiosis in mice is regulated by r ...
... (Mak), is not essential for fertility in mice12. Several studies have characterized the transcriptome during male meiosis in mice13,14, but regulators of the mam malian meiotic program remain largely unidentified. A major advance was the discovery that the onset of meiosis in mice is regulated by r ...
Chapter 12 Topic: Patterns of Inheritance Reading: Chapter 12
... Topic: Patterns of Inheritance Important vocabulary terms used throughout the genetics unit: • Chromosome: Strands of DNA in the nucleus of the cell. Technically, it is a chromosome only when it is wound up around special histone proteins just before cell division. However, it is convenient for us t ...
... Topic: Patterns of Inheritance Important vocabulary terms used throughout the genetics unit: • Chromosome: Strands of DNA in the nucleus of the cell. Technically, it is a chromosome only when it is wound up around special histone proteins just before cell division. However, it is convenient for us t ...
Ch. 7: Extending Mendelian Genetics
... • There are 3 alleles that determine blood type: IA, IB, and i – IA and IB are dominant to i. – IA and IB are codominant. ...
... • There are 3 alleles that determine blood type: IA, IB, and i – IA and IB are dominant to i. – IA and IB are codominant. ...
The role of meiotic drive in hybrid male sterility
... drive may not provide the single best explanation of Haldane’s rule for two reasons: female drive does not explain hybrid inviability and female drive seemingly would not apply to haplodiploid species or species lacking an XY or ZW sex (whereas Haldane’s rule still applies to both species types). Fu ...
... drive may not provide the single best explanation of Haldane’s rule for two reasons: female drive does not explain hybrid inviability and female drive seemingly would not apply to haplodiploid species or species lacking an XY or ZW sex (whereas Haldane’s rule still applies to both species types). Fu ...
A Novel Compact Genetic Algorithm using Offspring Survival
... The cGA represents the population using a probability vector as a probability distribution. Fig. 1 describes a pseudo-code of the original cGA, where l is the number of bits of a chromosome [2]. First of all, every bits of the probability vector, p[i], are initialized by 0.5. Two chromosomes are gen ...
... The cGA represents the population using a probability vector as a probability distribution. Fig. 1 describes a pseudo-code of the original cGA, where l is the number of bits of a chromosome [2]. First of all, every bits of the probability vector, p[i], are initialized by 0.5. Two chromosomes are gen ...
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.)