• Study Resource
  • Explore Categories
    • 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
The first midterm will consist of 20 four
The first midterm will consist of 20 four

... 8) The gene defect for both Huntington's Disease and Fragile-X syndrome consists of
 a) 
 a series of repeated nucleotide sequences
 b) a mispairing of base pairs
 c) a major deletion of an important segment of a gene d) a metabolic block
 9) RNA is synthesized from the DNA template during a) transc ...
Chromosomal Abnormalities
Chromosomal Abnormalities

... 1. You should have two copies of the chromosome sheet to represent your genetic makeup. One sheet represents the chromosomes of your mother's egg and the other sheet represents the chromosomes from your father's sperm. You should use one pencil color for your mother and another color for your father ...
NAME
NAME

... a. Chromosomes have chunks of nucleotides that determine traits. These parts are ________________. b. A person having two genes that are alike is said to be _________________________. c. A gene that prevents others from showing is said to be ________________________. d. A gene that may not show up e ...
Genetics
Genetics

... Genetic loci on the same chromosome are physically close to one another and tend to stay together during meiosis, and are thus ...
Dominant-Recessive Inheritance
Dominant-Recessive Inheritance

... • In future, RNA-interfering drugs may treat diseases such as age-related macular degeneration and Parkinson’s disease ...
Types of Inheritance patterns... Two categories of traits : Any trait
Types of Inheritance patterns... Two categories of traits : Any trait

... or Y chromosomes is a sex-linked trait. The trait will show up in one gender more than the other. Ex. Male pattern baldness Color blindness Hemophilia Muscular Dystrophy An affected female would have to have inherited two copies, one on each X chromosome. A male would only have to inherit ONE copy o ...
From Mendel to DNA
From Mendel to DNA

... 1. How is sex determined in humans? 2. Can you predict what features a child might inherit? ...
AP Psychology - Coshocton High School
AP Psychology - Coshocton High School

... • ** Traits are usually influenced by genes acting together ** ...
AP Biology Chapter 15 Notes The Chromosomal - Pomp
AP Biology Chapter 15 Notes The Chromosomal - Pomp

... 2. Can  also  occur  during  mitosis   a. If  this  occurs  early  in  embryonic  development,  a   large  number  of  the  organisms  cells  will  be   aneuploids  which  could  have  substantial  effect   on  the  organism.     ii. Aneu ...
Chapter 10: Mendel`s Laws of Heredity
Chapter 10: Mendel`s Laws of Heredity

...  so homologous chromosomes move together into a new gamete giving that gamete too many chromosomes, while the other new gamete is missing the chromosome  organisms with extra chromosomes can survive  organisms with too few chromosomes usually do not survive  polyploidy: when organisms have more ...
Linked Genes
Linked Genes

... crossover will occur between them " Higher recombination frequency = genes further apart on chromosome ...
Chapter 10 Genetics: Mendel and Beyond
Chapter 10 Genetics: Mendel and Beyond

...  Incomplete dominance results when heterozygotes show intermediate phenotype  Codominance results when two alleles at locus produce two different phenotypes that both appear in heterozygoes  Means both are fully expressed  Best example is ABO blood grouping ...
Chromosomal Basis of Inheritance
Chromosomal Basis of Inheritance

... Thomas Hunt Morgan was the first to associate a specific gene with a specific chromosome. Experimental animal, Drosophila melanogaster, a fruit fly species that eats fungi on fruit. ...
CH 14 EXTRA CREDIT Study Guide
CH 14 EXTRA CREDIT Study Guide

... 10. In Huntington’s disease, the person usually is Hh but sometimes HH. What % of children will inherit Huntington’s if one parent has it? 11. What causes sickle-cell? 12. What causes cystic fibrosis? How is this different from a normal form of the allele? 13. What does sickle cell hemoglobin look l ...
ASSIGNMENT – 1
ASSIGNMENT – 1

... 1) It is due to a dominant gene 2) Its penetrance is 100% and expressivity is variable 3) It has 85% penetrance and 100% expressivity 4) It is caused by quantitative inheritance of a polygenic trait. 40. Sex differentiation occurs in gonads at the 1) time of conception 2) time of birth 3) sixth week ...
Sources of Genetic Variation - University of Evansville Faculty Web
Sources of Genetic Variation - University of Evansville Faculty Web

... reproductive tissue occurs, doubling chromosome number • The hybrid will be able to make gametes because each chromosome has a homologue with which to synapse during meiosis • The union of gametes from this hybrid may give rise to a new species of interbreeding plants, reproductively isolated from b ...
BIO101 Objectives Unit 2 1 Chapter 14 1. Describe the work of
BIO101 Objectives Unit 2 1 Chapter 14 1. Describe the work of

... 3. Outline Morgan’s experiments with Drosophila eye color at Columbia U. that showed the w allele is located on the X chromosome 4. Examine the use of mutant and wildtype allele symbols in Drosophila genetics (genetic nomenclature) 5. Explain why most sex-linked genes are located on the X chromosome ...
Modern Genetics PPT
Modern Genetics PPT

... recessive, the dominant trait will show  In a male, there isn't corresponding alleles. If the X chromosome has a recessive trait, and there is no corresponding allele on the Y chromosome, then the recessive trait will show.  Therefore, males have a higher tendency to show recessive sex linked trai ...
Chapter 4 - Modern GENETICS
Chapter 4 - Modern GENETICS

... generation to generation in humans. ...
Reg Bio DNA tech 2013 ppt
Reg Bio DNA tech 2013 ppt

...  serious health problems. Ninety percent die in infancy; however, those who live past their first birthday usually are quite healthy thereafter. They have a characteristic hand appearance with clenched hands and overlapping fingers. ...
Inheritance related to Gender Determination
Inheritance related to Gender Determination

... The embryonic gonads develop into testes in response to the expression of a “testes determining factor” gene on the Y chromosome; Otherwise, the gonads develop into ovaries The Y chromosome also has a region that has sequence homology with the X chromosome, allowing pairing and segregation during me ...
Add Meiosis Vocabulary to notes
Add Meiosis Vocabulary to notes

... that contain double the amount of chromosomes than haploid cells  Usually called the “normal” number of chromosomes  Two copies of each gene ...
Genetics and Inheritance - Harford Community College
Genetics and Inheritance - Harford Community College

... • Fraternal twins are created when two eggs are released and fertilized at the same time. May or may not be the same gender. • Identical twins are produced when the fertilized zygote cells split apart during development. The offspring’s genetic makeup is exactly the same. – Fraternal twins are twice ...
Applications of Molecular Cytogenetics
Applications of Molecular Cytogenetics

... examined by the FISH method. • Before the molecular cytogenetic analysis basic cytogenetic examination is recommended. Which type of probe you would use for FISH analysis of microdeletion of the chromosome 7? ...
IB Biology 11 SL (H) - Anoka
IB Biology 11 SL (H) - Anoka

... ● How genetic information is transmitted from parents to offspring through the processes of meiosis and translation, using the example of sickle-cell anemia fertilization as they relate to chromosome recombination and sexual reproduction ● State that meiosis is a reduction division of a diploid nucl ...
< 1 ... 198 199 200 201 202 203 204 205 206 ... 290 >

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.)
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report