• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
(HOM) genes. Antennapedia and Bithorax Complexes (WR
(HOM) genes. Antennapedia and Bithorax Complexes (WR

... there was a gradient of a repressor molecule, highest in T2 (where no BX-C genes are expressed) and lowest in A8 (where all are expressed). Further, he postulated that the promoter region of each gene in the BX-C had a different affinity for the repressor, with iab8 having the highest affinity (and ...
Chapter 11 Power point
Chapter 11 Power point

...  located on non-sex chromosomes  at least one parent is affected  does not skip generations  affected individuals are homozygous dominant or heterozygous  affects males & females Ex. Achondroplasia, Huntington disease, Lactose intolerance, Polydactyly ...
File
File

... Draw a Punnett square diagram to determine the probability of the child having syndrome H. Identify any children with syndrome H. Use the following symbols: A = dominant allele a = recessive allele Probability = ..................................... % ...
Chapter 11 – Patterns of Chromosomal Inheritance
Chapter 11 – Patterns of Chromosomal Inheritance

... Chapter 11 – Patterns of Chromosomal Inheritance Inheritance of sex linked traits Male children do not have a heterozygous option for traits located on the X, so they either have the genetic disorder or don’t have it. They are hemizygous with respect to traits on the X chromosome (possess only one ...
A tall tomato plant with yellow fruit is mated to a dwarf tomato plant
A tall tomato plant with yellow fruit is mated to a dwarf tomato plant

... A tall tomato plant with yellow fruit is mated to a dwarf tomato plant with red fruit. Hundreds of offspring are produced and they are all tall with red fruit. What are the genotypes of the parents? What is the genotype(s) of their offspring? If two of these offspring are mated together, list all th ...
genetically
genetically

... • Recently was considered that the enzyme is coded by the gene with two alleles (non-functional is recessive) • Molecular analysis shown more than 50 alleles in the locus • Most alleles has not phenotypic effect • 8 alleles in homozygotic conditions have enzyme activity 1 – 50% from the norm. ...
development/genetics
development/genetics

... metabolic enzymes, type of chloride membrane transporter protein)-these pairs of chromosomes are called homologous pairs. 4. 22 pairs of Chromosomes that determine only body traits are autosomal, the pair that also determines sex characters are sex chromosomes (i.e., XX and XY) . So there are autoso ...
UNIT 1: INTRODUCTION TO BIOLOGY
UNIT 1: INTRODUCTION TO BIOLOGY

... Meiosis is a special type of cell division which creates: 1. haploid germ cells (eggs and sperm) from a diploid parent cell for sexual reproduction 2. genetic variety due to tetrad formation and crossing over  O Onnee single diploid parent cell is divided to produce ffoouurr haploid daughter cells ...
Meiosis
Meiosis

... • Transmission of traits between generations • Molecular basis of heredity is DNA replication • Gene is a specific segment of DNA • Physical location on the chromosome is called a genetic LOCUS (plural = “loci”) – e.g., the “eye-color locus”, Adh locus ...
“GENE-STICKS”
“GENE-STICKS”

... g) What is the phenotype of your “T T” pair?___________________ h) What is the phenotype of you “t t” pair? ___________________ i) What is the phenotype of your “P P” pair? ___________________ j) What is the phenotype of your “p p” pair? ___________________ 4) Follow the steps on meiosis using the c ...
PPT
PPT

... • Transmission of traits between generations • Molecular basis of heredity is DNA replication ...
8.7 Mutations - Perry Local Schools
8.7 Mutations - Perry Local Schools

... 4. Nondisjunction – failure of homologous chromosomes to separate properly during meiosis Two possible outcomes: 1. One gamete - an extra chromosome • when fertilized - 3 copies of chromosome • trisomy 2. One gamete - one less chromosome • when fertilized - 1 copy of chromosome • monosomy ...
Inheritance Practice Quiz
Inheritance Practice Quiz

... A. About evenly split (25%) between graynormal wings, gray-vestigial wings, blacknormal wings and black-vestigial wings B. About half gray-normal wings, half blackvestigial wings C. About 75% gray-normal wings, 25% blackvestigial wings D. About half gray-vestigial wings, half blacknormal wings 8. Ba ...
New gene-therapy techniques show potential
New gene-therapy techniques show potential

... truck. Geneticist Mark A. Kay and his colleagues reasoned that a selected gene delivery truck might be packaged into such DNA, which then could easily insert itself into a patient's chromosome. They performed experiments on more than 50 mice, some with hemophilia, a disease in which the blood doesn' ...
Genetics Notes C
Genetics Notes C

... a.When the heterozygous phenotype is somewhere in between the two homozygous phenotypes b.In some cases, no allele is completely dominant c. Example- Red flowers crossed with white flowers produce pink flowers ...
Final Exam reviewsheet 1415
Final Exam reviewsheet 1415

... 7. During which phase of meiosis do homologous chromosomes cross over? 8. During which phase of meiosis do homologous chromosomes get pulled apart from each other? 9. At the end of meiosis, how many haploid cells have been formed? What are these called? 10. Who was the scientist that first used punn ...
Sex determination in Bombyx mori
Sex determination in Bombyx mori

... OD2 domain is known to be necessary for the oligomerization of DSX and is supposed to be related to DNAbinding cooperativity when the proteins bind regulatory sites in target DNA40 . Thus, BmDSX would also bind to target DNA by forming oligomers. Although the actual expression level of Bmdsx mRNA wa ...
1 SMOLENSK STATE MEDICAL ACADEMY NINA E
1 SMOLENSK STATE MEDICAL ACADEMY NINA E

... A characteristic common to all organisms is the capacity to reproduce offspring, to create a new generation of similar organisms. People have known for centuries several important facts about reproduction. Within a population of organisms variability (or "varieties") usually exists for the character ...
Chavis Biology
Chavis Biology

... ○ One pair of chromosomes in an organism determines the sex (male, female) of the organism; these are known as sex chromosomes. All other chromosomes are known as autosomal chromosomes, or autosomes. ○ Cells (except for sex cells) contain one pair of each type of chromosome.  Each pair consists of ...
Genetics Notes - davis.k12.ut.us
Genetics Notes - davis.k12.ut.us

... genetically determined characteristic and may be passed as a dominant (an allele which is expressed) trait or a recessive (an allele which is present but not expressed) trait. Alleles may be homozygous (both alleles for a trait are the same) or heterozygous (the alleles for a trait are different). A ...
Standard B-4: The student will demonstrate an understanding of the
Standard B-4: The student will demonstrate an understanding of the

... ○ One pair of chromosomes in an organism determines the sex (male, female) of the organism; these are known as sex chromosomes. All other chromosomes are known as autosomal chromosomes, or autosomes. ○ Cells (except for sex cells) contain one pair of each type of chromosome.  Each pair consists of ...
Standard B-4: The student will demonstrate an
Standard B-4: The student will demonstrate an

... ○ One pair of chromosomes in an organism determines the sex (male, female) of the organism; these are known as sex chromosomes. All other chromosomes are known as autosomal chromosomes, or autosomes. ○ Cells (except for sex cells) contain one pair of each type of chromosome. ♦ Each pair consists of ...
The Principle of Segregation
The Principle of Segregation

... up each gene may be the same or different. • If the alleles are the same they are called homozygous • If the alleles are different they are called ...
1 - Moodle
1 - Moodle

... 29. Assume that the "A" locus and the "B" locus are linked -- so tightly linked that there is no observed crossing over. Begin with a Parental generation cross between an AABB individual and an aabb individual. What are the expected genotypic ratios in the F1 and F2 generations? You will want to dia ...
Meiosis intro presentation
Meiosis intro presentation

... the larger chromosomes to the left are homologous to each other, and the smaller chromosomes are homologous to each other. They may not have the exact same alleles, but they have the same genes in the same places (and the same chromosome number). 9. Non-homologous chromosomes: chromosomes that are n ...
< 1 ... 332 333 334 335 336 337 338 339 340 ... 681 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report