CHROMOSOMES
... In humans the normal cell nucleus contains 46 chromosomes, made up of 22 pairs of autosomes and a single pair of sex chromosomes - XX in the female and XY in the male. ...
... In humans the normal cell nucleus contains 46 chromosomes, made up of 22 pairs of autosomes and a single pair of sex chromosomes - XX in the female and XY in the male. ...
Unit 4-notes File
... 1. Binary fission is carried out by many unicellular organisms such as amoebas and bacteria. In this form the parent replicates its DNA and other cellular materials and divides into two parts (mitosis) which are the offspring. This type of reproduction can result in extremely fast reproduction. Ex. ...
... 1. Binary fission is carried out by many unicellular organisms such as amoebas and bacteria. In this form the parent replicates its DNA and other cellular materials and divides into two parts (mitosis) which are the offspring. This type of reproduction can result in extremely fast reproduction. Ex. ...
Taxonomy - cloudfront.net
... What is morphology and how can it be used to help classify organisms? What are homologous structures and how is it used to help classification? How can molecular evidence like DNA and chromosomes be used to classify life? What does it mean if two different organisms develop along similar pattern? Di ...
... What is morphology and how can it be used to help classify organisms? What are homologous structures and how is it used to help classification? How can molecular evidence like DNA and chromosomes be used to classify life? What does it mean if two different organisms develop along similar pattern? Di ...
chromosomes
... Chromosomes consist of DNA molecules supported by a ‘scaffold’ of proteins. The diagram illustrates such an arrangement but it is really more complex than this ...
... Chromosomes consist of DNA molecules supported by a ‘scaffold’ of proteins. The diagram illustrates such an arrangement but it is really more complex than this ...
Mutations Notes - Oakman School News
... Read the following notes and complete the concept map – attached - on your own paper Gene Mutations ...
... Read the following notes and complete the concept map – attached - on your own paper Gene Mutations ...
Wide-spread polyploidizations during plant evolution Dicot
... Figure 3. Progression of rearrangem ent s and chromoso me fusions leading t o t he loss of a cent romere in Z. rouxii. Two non-reciprocal telomeric translocations and a telomere-to-telomere fusion gave rise to the extant chromosome structures in Z. rouxii. Chromosomes in green boxes are those that u ...
... Figure 3. Progression of rearrangem ent s and chromoso me fusions leading t o t he loss of a cent romere in Z. rouxii. Two non-reciprocal telomeric translocations and a telomere-to-telomere fusion gave rise to the extant chromosome structures in Z. rouxii. Chromosomes in green boxes are those that u ...
genetics - MrsGorukhomework
... Law of Independent assortment – Alleles of different genes behave independently and sort independently during meiosis. Relate to meiosis and variation in sexual reproduction – natural selection and conditions necessary Homologous chromosomes – a like pair of chromosomes that carry alleles for the sa ...
... Law of Independent assortment – Alleles of different genes behave independently and sort independently during meiosis. Relate to meiosis and variation in sexual reproduction – natural selection and conditions necessary Homologous chromosomes – a like pair of chromosomes that carry alleles for the sa ...
Chapter 14: Human Heredity Thomas Hunt Morgan: studied
... Sex-linked Trait: a trait carried on the X sex chromosome. Because males only get one X, any X chromosome linked gene a male inherits is expressed. If female has only one X with trait, she is a carrier. Females usually get carrier status from father’s X. Ex: color-blindness – normal color vision is ...
... Sex-linked Trait: a trait carried on the X sex chromosome. Because males only get one X, any X chromosome linked gene a male inherits is expressed. If female has only one X with trait, she is a carrier. Females usually get carrier status from father’s X. Ex: color-blindness – normal color vision is ...
Chromosome “theory” of inheritance
... from Mom and from Dad – do NOT have the same DNA sequence. They have the same genes (CFTR, Met, and others), but not the same allelic forms of those genes! For example, ca. 1 in 10,000 individual of Northern European origin is a carrier for the D508 CFTR mutation. This means that the two homologous ...
... from Mom and from Dad – do NOT have the same DNA sequence. They have the same genes (CFTR, Met, and others), but not the same allelic forms of those genes! For example, ca. 1 in 10,000 individual of Northern European origin is a carrier for the D508 CFTR mutation. This means that the two homologous ...
File
... • Nondisjunction leads to only one X chromosome being inherited. • Causes females to be sterile. Klinefelter’s syndrome • Nondisjunction leads to an extra X ...
... • Nondisjunction leads to only one X chromosome being inherited. • Causes females to be sterile. Klinefelter’s syndrome • Nondisjunction leads to an extra X ...
Mutations Notes TEK 6C
... • Mutations can occur in both types of cells: – Body cells (muscle, skin, brain, bone etc) – Gametes (Sex Cells – sperm or egg) ...
... • Mutations can occur in both types of cells: – Body cells (muscle, skin, brain, bone etc) – Gametes (Sex Cells – sperm or egg) ...
Chromosomes, Genes, and Alleles, oh my
... 3. This gene may have different alleles. Alleles are the different forms of a certain gene – the different alleles all deal with the same trait but have slightly different information. The different alleles of the gene will be almost identical and will be in the same place on different chromosomes b ...
... 3. This gene may have different alleles. Alleles are the different forms of a certain gene – the different alleles all deal with the same trait but have slightly different information. The different alleles of the gene will be almost identical and will be in the same place on different chromosomes b ...
Unit 5 - Notes
... 9. Which of the following sets would represent Mendel’s Parent (P) generation? a) RR x RR b) Rr x Rr c) RR x rr 10. When two different alleles occur together, such as R r, the one that is expressed is a) dominant b) recessive ...
... 9. Which of the following sets would represent Mendel’s Parent (P) generation? a) RR x RR b) Rr x Rr c) RR x rr 10. When two different alleles occur together, such as R r, the one that is expressed is a) dominant b) recessive ...
Punnett Squares Sex-linked lab
... The sex chromosomes, the ones that determine whether someone is a male or a female, are the X and Y chromosomes. As the next slide shows the X chromosome contains many genes while the Y chromosome only has three discovered so far. Therefore with sexlinked genes, the genes are carried on the X ...
... The sex chromosomes, the ones that determine whether someone is a male or a female, are the X and Y chromosomes. As the next slide shows the X chromosome contains many genes while the Y chromosome only has three discovered so far. Therefore with sexlinked genes, the genes are carried on the X ...
Unit 4 – AP Biogram – Cell Reproduction and Mendelian Genetics
... 30. Contrast the following by defining the terms: daughter & parent cell, haploid & diploid, sexual & asexual reproduction 31. List the stages of the cell cycle and describe what events occur during each. 32. Briefly discuss the characteristics of a cancer cell and how cancer can be prevented. 33. D ...
... 30. Contrast the following by defining the terms: daughter & parent cell, haploid & diploid, sexual & asexual reproduction 31. List the stages of the cell cycle and describe what events occur during each. 32. Briefly discuss the characteristics of a cancer cell and how cancer can be prevented. 33. D ...
Define Chromatin: Histones: Sister chromatids: Centromere
... C. Metaphase I D. Metaphase II 23. Independent assortment occurs in: A. mitosis B. meiosis ...
... C. Metaphase I D. Metaphase II 23. Independent assortment occurs in: A. mitosis B. meiosis ...
sex-linked traits
... Allele for hemophilia was introduced into a number of different European royal families by Queen Victoria of England ...
... Allele for hemophilia was introduced into a number of different European royal families by Queen Victoria of England ...
Cytogenetics
... Abnormalities in peripheral blood may need to be confirmed in other tissues Analysis of diseased tissues can provide useful information. E.g evaluation of cancers ...
... Abnormalities in peripheral blood may need to be confirmed in other tissues Analysis of diseased tissues can provide useful information. E.g evaluation of cancers ...
Chapter 7 – Linkage, Recombination, and
... • If 2 genes are on the same chromosome, but far apart, crossing over can allow for recombination of gametes • Genes very far apart on the same chromosome will always be separated by crossing over, and are not considered to be linked ...
... • If 2 genes are on the same chromosome, but far apart, crossing over can allow for recombination of gametes • Genes very far apart on the same chromosome will always be separated by crossing over, and are not considered to be linked ...
Pierce chapter 7
... • If 2 genes are on the same chromosome, but far apart, crossing over can allow for recombination of gametes • Genes very far apart on the same chromosome will always be separated by crossing over, and are not considered to be linked ...
... • If 2 genes are on the same chromosome, but far apart, crossing over can allow for recombination of gametes • Genes very far apart on the same chromosome will always be separated by crossing over, and are not considered to be linked ...
Ch11 notes Master
... factors that control traits are passed from generation to generation. genes: chemical factors that determine traits alleles: contrasting forms of a gene. e.g. gene for “tallness” or “shortness” some alleles are dominant; some are recessive. ...
... factors that control traits are passed from generation to generation. genes: chemical factors that determine traits alleles: contrasting forms of a gene. e.g. gene for “tallness” or “shortness” some alleles are dominant; some are recessive. ...
Ch. 13 Meiosis - HobbsAPBiology
... One chromosome from each pair is inherited from each parent. In each of your homologous pairs one chrom. Is maternal the other is paternal You have a set of 23 from each ...
... One chromosome from each pair is inherited from each parent. In each of your homologous pairs one chrom. Is maternal the other is paternal You have a set of 23 from each ...
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).