Section 11.2 - CPO Science
... to 1916) examined the nucleus of the cell of a grasshopper under a microscope. • Sutton observed cell parts separating during cell division. • Soon chromosomes were discovered to contain genes. ...
... to 1916) examined the nucleus of the cell of a grasshopper under a microscope. • Sutton observed cell parts separating during cell division. • Soon chromosomes were discovered to contain genes. ...
Notes GENES ON CHROMOSOMES
... Explanation: During early embryonic development in the female, some of the X’s are inactivated. Therefore there are two populations of traits in one organism and two different gene expressions. ...
... Explanation: During early embryonic development in the female, some of the X’s are inactivated. Therefore there are two populations of traits in one organism and two different gene expressions. ...
File
... 13. In one or two sentences, define the term recessive trait in your own words. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ____________________________ ...
... 13. In one or two sentences, define the term recessive trait in your own words. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ____________________________ ...
Chromosome number 2
... a threshold number of copies is reached. ◦ iv.Amplification of CGG repeats occurs only in females, perhaps during a slipped mispairing process during DNA replication. ◦ v. The FMR-1 product (FMRP) is an RNA-binding protein. The triplet repeat expansion in FMR-1 affects expression of certain mRNAs, b ...
... a threshold number of copies is reached. ◦ iv.Amplification of CGG repeats occurs only in females, perhaps during a slipped mispairing process during DNA replication. ◦ v. The FMR-1 product (FMRP) is an RNA-binding protein. The triplet repeat expansion in FMR-1 affects expression of certain mRNAs, b ...
Inheritance and Adaptations
... on the species and in most species they come in pairs. Humans have 23 pairs of chromosomes in each body cell. Each pair contains one chromosome from the father and one from the mother. Reproductive cells are known as the sperm and egg; each contains 23 single chromosomes. Within each chromosom ...
... on the species and in most species they come in pairs. Humans have 23 pairs of chromosomes in each body cell. Each pair contains one chromosome from the father and one from the mother. Reproductive cells are known as the sperm and egg; each contains 23 single chromosomes. Within each chromosom ...
Reebops - FW Johnson Collegiate
... Place it at the back of the class (but don’t put your chromosomes away yet). ...
... Place it at the back of the class (but don’t put your chromosomes away yet). ...
unit 6 reading guidE
... 4. Where are gametes located in the body? ______________________________________________________ 5. DNA in the ________________________ cells can be passed on to offspring. 6. What are homologous chromosomes? ______________________________________________________________________________________ 7. C ...
... 4. Where are gametes located in the body? ______________________________________________________ 5. DNA in the ________________________ cells can be passed on to offspring. 6. What are homologous chromosomes? ______________________________________________________________________________________ 7. C ...
Integrated Science II
... 2. In Step 3 you took one chromosomes from each homologous pair and set them aside in a pile. a. Which of Mendel’s laws is demonstrated in this step? b. In the real world, what is this process, which reduces the chromosome number in half, called? c. What type of cells result from this process? d. Ho ...
... 2. In Step 3 you took one chromosomes from each homologous pair and set them aside in a pile. a. Which of Mendel’s laws is demonstrated in this step? b. In the real world, what is this process, which reduces the chromosome number in half, called? c. What type of cells result from this process? d. Ho ...
Learning Target Unit #5 AP Biology Genetic Basis of Life Chapters
... 1. Genes are passed from parents to offspring by the inheritance of Chromosomes 2. How meiosis reduces the number of chromosomes (diploid to haploid) 3. Evolutionary significance of genetic variation that results from sexual life cycles 4. Concepts of Mendelian genetics (laws of probability, inherit ...
... 1. Genes are passed from parents to offspring by the inheritance of Chromosomes 2. How meiosis reduces the number of chromosomes (diploid to haploid) 3. Evolutionary significance of genetic variation that results from sexual life cycles 4. Concepts of Mendelian genetics (laws of probability, inherit ...
Science EQT Study Guide: 2nd Quarter
... 13 The function of chromosomes is directly related to what? 14 What is heredity? 15 What makes up chromosomes? 16 How can the process of meiosis be described? 17 Mitosis produces __________ while meiosis produces __________. 18 Unlike mitosis, what is the end result of meiosis? 19 What is the haploi ...
... 13 The function of chromosomes is directly related to what? 14 What is heredity? 15 What makes up chromosomes? 16 How can the process of meiosis be described? 17 Mitosis produces __________ while meiosis produces __________. 18 Unlike mitosis, what is the end result of meiosis? 19 What is the haploi ...
Meiosis Poster Project - Mercer Island School District
... Use stickers with letters to represent the different genes on the chromosomes. o The long homologous pair has the gene for flower color (R/r). Long chromosome 1 has the red flower color gene form (R) Long chromosome 2 has the white flower color gene form (r) o The short homologous pair has the gene ...
... Use stickers with letters to represent the different genes on the chromosomes. o The long homologous pair has the gene for flower color (R/r). Long chromosome 1 has the red flower color gene form (R) Long chromosome 2 has the white flower color gene form (r) o The short homologous pair has the gene ...
Snurfle Meiosis
... Draw DNA before and after Replication (choose 2 alleles ex. Bb). USE COLOR WITH PURPOSE!! (one color per chromosome) ...
... Draw DNA before and after Replication (choose 2 alleles ex. Bb). USE COLOR WITH PURPOSE!! (one color per chromosome) ...
Regulation and mutation
... triploid – 3 (sterile) tetraploid – 4 ....etc. plants tend to have more ploidy levels – can overcome sterility with vegetative reproduction higher ploidy -> larger cells, more ‘product’ - yeast - wheats autopolyploidy vs. allopolyploidy ...
... triploid – 3 (sterile) tetraploid – 4 ....etc. plants tend to have more ploidy levels – can overcome sterility with vegetative reproduction higher ploidy -> larger cells, more ‘product’ - yeast - wheats autopolyploidy vs. allopolyploidy ...
Chromosomes and Diseases - Faculty of Science at Bilkent
... where the ancestral chromosomes fused. ...
... where the ancestral chromosomes fused. ...
Chapter 10!
... containing half the number of chromosomes as a parent’s body cell is called meiosis. Meiosis occurs in the specialized body cells of each parent that produce gametes. ...
... containing half the number of chromosomes as a parent’s body cell is called meiosis. Meiosis occurs in the specialized body cells of each parent that produce gametes. ...
File - NCEA Level 2 Biology
... number 21 chromosomes (usually in the mother) do not separate and the resulting ovum contains two number 21 chromosomes instead of just one, with a total of 24 instead of the normal haploid number of 23. When this ovum is fertilized by a normal haploid sperm with one number 21 chromosome (total 23), ...
... number 21 chromosomes (usually in the mother) do not separate and the resulting ovum contains two number 21 chromosomes instead of just one, with a total of 24 instead of the normal haploid number of 23. When this ovum is fertilized by a normal haploid sperm with one number 21 chromosome (total 23), ...
Biology - cloudfront.net
... 14) What is the purpose of meiosis? 15) How does the location of a gene on a chromosome affect inheritance? 16) Be able to understand the following terms: gametes, gonads, diploid, haploid, homologous chromosomes 17) What do (N) vs (2N) represent during meiosis? 18) Recognize homologous chromosomes, ...
... 14) What is the purpose of meiosis? 15) How does the location of a gene on a chromosome affect inheritance? 16) Be able to understand the following terms: gametes, gonads, diploid, haploid, homologous chromosomes 17) What do (N) vs (2N) represent during meiosis? 18) Recognize homologous chromosomes, ...
Trisomy 21: The Story of Down Syndrome What is Down syndrome?
... ovaries and testicles ("meiosis") and consists of one cell splitting into two, with the resulting cells having half the number of chromosomes of the parent cell. So, normal eggs and sperm cells only have 23 chromosomes instead of 46.This is what a normal set of chromosomes looks like. Note the 22 ev ...
... ovaries and testicles ("meiosis") and consists of one cell splitting into two, with the resulting cells having half the number of chromosomes of the parent cell. So, normal eggs and sperm cells only have 23 chromosomes instead of 46.This is what a normal set of chromosomes looks like. Note the 22 ev ...
Gene Mapping - manasquanschools
... • Morgan’s studies of the fruit fly and mutant gene for white eye proved Sutton’s ideas of chromosomal inheritance true –Also gave rise to interesting idea of linkage ...
... • Morgan’s studies of the fruit fly and mutant gene for white eye proved Sutton’s ideas of chromosomal inheritance true –Also gave rise to interesting idea of linkage ...
Ch - TeacherWeb
... 10.genotype: an organism’s allele pairs (YY or Yy) phenotype: the observable characteristic or outward expression of an allele pair (ex. yy = green seeds) 11.law of segregation: two alleles for each trait separate during meiosis and then unite during fertilization. a. monohybrid cross: crossing hyb ...
... 10.genotype: an organism’s allele pairs (YY or Yy) phenotype: the observable characteristic or outward expression of an allele pair (ex. yy = green seeds) 11.law of segregation: two alleles for each trait separate during meiosis and then unite during fertilization. a. monohybrid cross: crossing hyb ...
CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES The Basis of
... 1. Distinguish between asexual and sexual reproduction. The Role of Meiosis in Sexual Life Cycles 2. Distinguish between the following pairs of terms: a. somatic cell and gamete b. autosome and sex chromosome c. haploid and diploid 3. Describe a karyotype and the types of information one can gain fr ...
... 1. Distinguish between asexual and sexual reproduction. The Role of Meiosis in Sexual Life Cycles 2. Distinguish between the following pairs of terms: a. somatic cell and gamete b. autosome and sex chromosome c. haploid and diploid 3. Describe a karyotype and the types of information one can gain fr ...
Diagram 1. Label the side that is mitosis and meiosis. 2. Draw an
... Analogy – It is like a bookcase – The words in the book are like DNA – made up of letters (nucleic acids) to tell a story or give directions. A book is a gene. It is a set of DNA that is put together and all works together to give one big set of directions. The chromosome is the whole bookcase. It i ...
... Analogy – It is like a bookcase – The words in the book are like DNA – made up of letters (nucleic acids) to tell a story or give directions. A book is a gene. It is a set of DNA that is put together and all works together to give one big set of directions. The chromosome is the whole bookcase. It i ...
BIO EXAM NOTES
... - autosomes are numbered 1 to 22 and sex chromosomes are labeled X or Y gamete: a male/female reproductive cell zygote: a cell formed by the fusion of two gametes fertilization: in humans, the joining of male and female gametes haploid: a cell that contains half the number of chromosomes as the pare ...
... - autosomes are numbered 1 to 22 and sex chromosomes are labeled X or Y gamete: a male/female reproductive cell zygote: a cell formed by the fusion of two gametes fertilization: in humans, the joining of male and female gametes haploid: a cell that contains half the number of chromosomes as the pare ...
Crossing-over and Independent Assortment
... Recall that chromosomes come in pairs. Each chromosome pair has the same set of genes, but those genes may be different alleles. There can be many genes on a single chromosome. Pairs of chromosomes are called homologous chromosomes. This is a picture of a human karyotype, which is all the chromosome ...
... Recall that chromosomes come in pairs. Each chromosome pair has the same set of genes, but those genes may be different alleles. There can be many genes on a single chromosome. Pairs of chromosomes are called homologous chromosomes. This is a picture of a human karyotype, which is all the chromosome ...
Meiosis - WTPS.org
... ** If the offspring has two “X” chromosomes it will be a female. ** If the offspring has one “X” chromosome and one “Y” chromosome it will be a male. ...
... ** If the offspring has two “X” chromosomes it will be a female. ** If the offspring has one “X” chromosome and one “Y” chromosome it will be a male. ...
Ploidy
Ploidy is the number of sets of chromosomes in a cell. Usually a gamete (sperm or egg, which fuse into a single cell during the fertilization phase of sexual reproduction) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The gametic or haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n, the zygotic or diploid number) i.e. two copies of autosomal chromosomes. For humans, a diploid species, n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs.Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).