DNA-Chromosomes-Genes-Genome student notesheet
... • A _____________________ is one of the threadlike "packages" of genes and other DNA in the nucleus of a cell. • Different kinds of organisms have different numbers of chromosomes. • Humans have _____________________of chromosomes, 46 in all: 44 autosomes and two sex chromosomes. • Each ____________ ...
... • A _____________________ is one of the threadlike "packages" of genes and other DNA in the nucleus of a cell. • Different kinds of organisms have different numbers of chromosomes. • Humans have _____________________of chromosomes, 46 in all: 44 autosomes and two sex chromosomes. • Each ____________ ...
Gene Linkage PPT
... Sex-Linked Inheritance Patterns About 2,000 genes have been mapped to the X chromosome, and only about a dozen have been mapped to the Y chromosome Females must inherit two copies of a sex-linked recessive allele to express it; males only need ONE COPY of the allele to express it ...
... Sex-Linked Inheritance Patterns About 2,000 genes have been mapped to the X chromosome, and only about a dozen have been mapped to the Y chromosome Females must inherit two copies of a sex-linked recessive allele to express it; males only need ONE COPY of the allele to express it ...
genetics study guide
... 1. Carrier - Only females can be carriers of recessive sex-linked disorders. Carriers are heterozygous for sex linked disorders and DO NOT have the disorder but can pass it on to offspring 2. Autosome - chromosome with genes not related to sex of organism (body cells) 3. Female chromosomes – XX 4. M ...
... 1. Carrier - Only females can be carriers of recessive sex-linked disorders. Carriers are heterozygous for sex linked disorders and DO NOT have the disorder but can pass it on to offspring 2. Autosome - chromosome with genes not related to sex of organism (body cells) 3. Female chromosomes – XX 4. M ...
Enter the weird world of the imagination!
... different types of cells in different parts of your body.You can only see human cells by looking at them down a microscope, which makes them look much bigger than they really are. Inside each cell there is something called a nucleus – this is where the chromosomes are found. Chromosomes look like lo ...
... different types of cells in different parts of your body.You can only see human cells by looking at them down a microscope, which makes them look much bigger than they really are. Inside each cell there is something called a nucleus – this is where the chromosomes are found. Chromosomes look like lo ...
Web Quest
... 3. Click on Dragons and enter the web lab. Follow the directions and answer the questions below as you go. a. Draw each chromosome and label the genes with the traits they control. ...
... 3. Click on Dragons and enter the web lab. Follow the directions and answer the questions below as you go. a. Draw each chromosome and label the genes with the traits they control. ...
Chapter 14, 15
... Thomas Hunt Morgan – 1st one to associate specific genes with specific chromosomes - studies with fruit flies, Drosophila melanogaster 1) grow rapidly 2) require small amt. of space 3) few chromosomes & these are large • 1st to discover a sex-linked gene (white eyes) X-linked ...
... Thomas Hunt Morgan – 1st one to associate specific genes with specific chromosomes - studies with fruit flies, Drosophila melanogaster 1) grow rapidly 2) require small amt. of space 3) few chromosomes & these are large • 1st to discover a sex-linked gene (white eyes) X-linked ...
MEIOSIS SEXUAL REPRODUCTION
... • If sperm and egg each had 46 chromosomes, the baby would have 92 • Therefore----- meiosis is the production of gametes (sperm or eggs) with only 23 ...
... • If sperm and egg each had 46 chromosomes, the baby would have 92 • Therefore----- meiosis is the production of gametes (sperm or eggs) with only 23 ...
Biology Mitosis / Meiosis 2012 – 2013 #3
... A. Deletion = part of the chromosome is broken off and lost B. Duplication = part of the chromosome breaks off and attaches to its homologous chromosome C. Inversion = part of a chromosome breaks off and reattaches backwards D. Translocation = part of a chromosome breaks off and attaches to a Non-ho ...
... A. Deletion = part of the chromosome is broken off and lost B. Duplication = part of the chromosome breaks off and attaches to its homologous chromosome C. Inversion = part of a chromosome breaks off and reattaches backwards D. Translocation = part of a chromosome breaks off and attaches to a Non-ho ...
Chapter 13 PowerPoint.ppt
... females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
... females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
Chapter 13 PowerPoint
... females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
... females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
Advanced Biology Vocabulary
... An individual that has more than two chromosome sets that are all derived from a single species. ...
... An individual that has more than two chromosome sets that are all derived from a single species. ...
Mutations
... • Failure of chromosomes to separate during meiosis • Causes gamete to have too many or too few chromosomes • Disorders: – Down Syndrome – three 21st chromosomes – Turner Syndrome – single X chromosome – Klinefelter’s Syndrome – XXY chromosomes ...
... • Failure of chromosomes to separate during meiosis • Causes gamete to have too many or too few chromosomes • Disorders: – Down Syndrome – three 21st chromosomes – Turner Syndrome – single X chromosome – Klinefelter’s Syndrome – XXY chromosomes ...
Notes GENES ON CHROMOSOMES
... Sex determination in animals is not always”Y” for males: p.341 ! Examples: some birds have : female = xy and male =xx X-Linkage: ...
... Sex determination in animals is not always”Y” for males: p.341 ! Examples: some birds have : female = xy and male =xx X-Linkage: ...
Meiosis *The process of making YOU!*
... Survival of organisms depending on the amount of chromosomes. Majority of the time – a rise in chromosome numbers results in ...
... Survival of organisms depending on the amount of chromosomes. Majority of the time – a rise in chromosome numbers results in ...
Mendel 2
... Inability to form blood clots, can bleed to death Rare recessive allele So rare women highly unlikely to inherit 2 Queen Victoria ...
... Inability to form blood clots, can bleed to death Rare recessive allele So rare women highly unlikely to inherit 2 Queen Victoria ...
Drosophila handout
... cloned DNA can be accomplished by in situ hybridization, and polytene maps can be correlated with genetic maps based on recombination by testing for complementation between mutant alleles and cytologically visible deletions. A summary of such correlated information is available on Flybase and links ...
... cloned DNA can be accomplished by in situ hybridization, and polytene maps can be correlated with genetic maps based on recombination by testing for complementation between mutant alleles and cytologically visible deletions. A summary of such correlated information is available on Flybase and links ...
Sex Determination and Linkage
... i. Heterogametic sex- two different sex chromosomes (XY) ii. Homogametic sex – two of the same sex chromosomes (XX) iii. Birds1. males- ZZ 2. females - ZW d. Y chromosome (Fig. 6.3) i. is fairly simple for several reasons ii. very few genes – 85 genes iii. No homolog to crossover with iv. Y has 3 fu ...
... i. Heterogametic sex- two different sex chromosomes (XY) ii. Homogametic sex – two of the same sex chromosomes (XX) iii. Birds1. males- ZZ 2. females - ZW d. Y chromosome (Fig. 6.3) i. is fairly simple for several reasons ii. very few genes – 85 genes iii. No homolog to crossover with iv. Y has 3 fu ...
Molecular Basis for Relationship between Genotype and Phenotype
... Molecular Basis for Relationship between Genotype and Phenotype ...
... Molecular Basis for Relationship between Genotype and Phenotype ...
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.)