Insect Karyotyping
... cause them to be larger than normal, this is known as duplication. There is a certain (fictional) species of insect that normally has three pairs of chromosomes – two pairs of body chromosomes and one pair of sex chromosomes. Their normal karyotypes and genotypes are shown in Table #2. However, some ...
... cause them to be larger than normal, this is known as duplication. There is a certain (fictional) species of insect that normally has three pairs of chromosomes – two pairs of body chromosomes and one pair of sex chromosomes. Their normal karyotypes and genotypes are shown in Table #2. However, some ...
Deletion loops in polytene chromosomes
... Humans tolerate X chromosome aneuploidy because X inactivation compensates for dosage ...
... Humans tolerate X chromosome aneuploidy because X inactivation compensates for dosage ...
Name
... themselves, but most worked in groups. The discoveries built upon each other to bring us to the detail we know today. Use the timeline cards and other sources to fill in the chart below. ...
... themselves, but most worked in groups. The discoveries built upon each other to bring us to the detail we know today. Use the timeline cards and other sources to fill in the chart below. ...
DNA Web
... 12. The DNA strand is made of letters, the letters make words, and the words make sentences. These sentences are called ______________________. 13. What is a gene? ...
... 12. The DNA strand is made of letters, the letters make words, and the words make sentences. These sentences are called ______________________. 13. What is a gene? ...
B3Revision LVW
... plants that may be difficult to grow from seed • disadvantage - if plants become susceptible to disease or to change in environmental conditions then all plants will be affected • disadvantage - lack of genetic variation. ...
... plants that may be difficult to grow from seed • disadvantage - if plants become susceptible to disease or to change in environmental conditions then all plants will be affected • disadvantage - lack of genetic variation. ...
Genetics of Animal Breeding
... During one stage of meiosis the chromosomes line up very close together. Sometimes the chromosomes cross over one another and split This forms new chromosomes with different combinations of genes The farther apart two genes are on a chromosomes the more likely they are end up in new combinatio ...
... During one stage of meiosis the chromosomes line up very close together. Sometimes the chromosomes cross over one another and split This forms new chromosomes with different combinations of genes The farther apart two genes are on a chromosomes the more likely they are end up in new combinatio ...
Biology 303 EXAM II 3/14/00 NAME
... B. the organism must be phenotypically abnormal C. chromosome number is likely altered D. meiotic crossovers within the inverted interval will not be recovered in offspring. ...
... B. the organism must be phenotypically abnormal C. chromosome number is likely altered D. meiotic crossovers within the inverted interval will not be recovered in offspring. ...
genetic disorders
... tend to have speech and reading problems. At one time, it was suggested that these men were likely to be criminally aggressive, but it has since been shown that the incidence of such behavior among them may be no greater than among XY males. B. Klinefelter syndrome occurs in 1/ 1,500 births. These m ...
... tend to have speech and reading problems. At one time, it was suggested that these men were likely to be criminally aggressive, but it has since been shown that the incidence of such behavior among them may be no greater than among XY males. B. Klinefelter syndrome occurs in 1/ 1,500 births. These m ...
Study Island
... Development of the cell theory was made possible by advances in _______. A. physics B. chemistry C. microscopy D. anatomy 2. All living organisms use energy. They also grow and reproduce. What is another characteristic of all living organisms? A. All living organisms must consume food in order to ac ...
... Development of the cell theory was made possible by advances in _______. A. physics B. chemistry C. microscopy D. anatomy 2. All living organisms use energy. They also grow and reproduce. What is another characteristic of all living organisms? A. All living organisms must consume food in order to ac ...
Congratulations, you are going to have a baby
... and recessive genes responsible for how a baby looks? What is the difference between Genotype and Phenotype? Do some traits require more than one gene to be fully expressed? What are sex-linked traits? How is there so much variation in the way children look even if they come from the same parents? W ...
... and recessive genes responsible for how a baby looks? What is the difference between Genotype and Phenotype? Do some traits require more than one gene to be fully expressed? What are sex-linked traits? How is there so much variation in the way children look even if they come from the same parents? W ...
Click here for the Study Guide Answer Key
... Traits are passed down from generation to generation with each parent giving one copy of each gene to each offspring. Mendel crossed a purebred tall pea plant with a purebred short pea plant (the P generation or the parental generation) to create the F1 generation. In the F1 generation, the phenotyp ...
... Traits are passed down from generation to generation with each parent giving one copy of each gene to each offspring. Mendel crossed a purebred tall pea plant with a purebred short pea plant (the P generation or the parental generation) to create the F1 generation. In the F1 generation, the phenotyp ...
Monohybrid Crosses & Phenotypes and Genotypes
... – Involves 2 cell divisions (mitosis only has one) – Results in 4 cells with 1/2 the normal genetic information that are not identical (mitosis results in 2 cells) ...
... – Involves 2 cell divisions (mitosis only has one) – Results in 4 cells with 1/2 the normal genetic information that are not identical (mitosis results in 2 cells) ...
Lucky Brand Genes: Kitty Chromosome Cookies
... Give the students time to analyze the results and answer the questions while eating their cookies. Lead a brief discussion with students about the test results to check for understanding. ...
... Give the students time to analyze the results and answer the questions while eating their cookies. Lead a brief discussion with students about the test results to check for understanding. ...
Meiosis and Fertilization
... gametes are produced. This variety contributes to the adaptability, and therefore survival, of a species. In this lab, you will simulate the random assortment of human genes and explore the variety of genotypes and phenotypes that characterize the offspring. Part A – Work with a partner. You will be ...
... gametes are produced. This variety contributes to the adaptability, and therefore survival, of a species. In this lab, you will simulate the random assortment of human genes and explore the variety of genotypes and phenotypes that characterize the offspring. Part A – Work with a partner. You will be ...
Chromosome
... 1. Mutation in proto-oncogene - these genes code for growth factors, which are proteins that regulate cell division - mutation will turn them into oncogenes causing unregulated/extreme cell division 2. Mutation of tumor-suppressor genes - found in over half of all cancer cases - p53 is one such gene ...
... 1. Mutation in proto-oncogene - these genes code for growth factors, which are proteins that regulate cell division - mutation will turn them into oncogenes causing unregulated/extreme cell division 2. Mutation of tumor-suppressor genes - found in over half of all cancer cases - p53 is one such gene ...
GENETICS
... protein constitutes a gene, a hereditary unit. Both genes and chromosomes occur in homologous pairs in diploid organisms (see diagram below). ...
... protein constitutes a gene, a hereditary unit. Both genes and chromosomes occur in homologous pairs in diploid organisms (see diagram below). ...
Final Study Guide
... 8. How can you determine a dog’s phenotype? 9. A female guinea pig homozygous dominant for black fur color is mated with a male homozygous for white fur color. In a litter of eight offspring, there would probably be _____. 10. The numbers in the figure below represent the chromosome number found in ...
... 8. How can you determine a dog’s phenotype? 9. A female guinea pig homozygous dominant for black fur color is mated with a male homozygous for white fur color. In a litter of eight offspring, there would probably be _____. 10. The numbers in the figure below represent the chromosome number found in ...
Genetics Review
... (versus the 2 paired in mitosis). During this pairing a process known as crossing over can occur. Crossing over results in the exchange of alleles between homologous chromosomes and produces new combinations of alleles. ...
... (versus the 2 paired in mitosis). During this pairing a process known as crossing over can occur. Crossing over results in the exchange of alleles between homologous chromosomes and produces new combinations of alleles. ...
gene control regions?
... Duplicate and Segregate properly at during each cell/organelle division – As opposed to plasmid or other extra-chromosomal elements (what about viruses?) ...
... Duplicate and Segregate properly at during each cell/organelle division – As opposed to plasmid or other extra-chromosomal elements (what about viruses?) ...
Chromosomal Rearrangements I
... for a deletion (Del/Del) will live. An example is the original white allele in Drosophila which is a small deletion affecting only the white gene. However, large deletions that span multiple genes usually result in homozygous lethality because they remove essential genes. What about individuals hete ...
... for a deletion (Del/Del) will live. An example is the original white allele in Drosophila which is a small deletion affecting only the white gene. However, large deletions that span multiple genes usually result in homozygous lethality because they remove essential genes. What about individuals hete ...
Lecture 10
... Related and structurally similar species may have variation in the amount of their total DNA by a factor of 100 In humans: ~5% of DNA is transcribed and 1.5% represents coding regions (exons). The rest is made of repeats with no obvious function. ...
... Related and structurally similar species may have variation in the amount of their total DNA by a factor of 100 In humans: ~5% of DNA is transcribed and 1.5% represents coding regions (exons). The rest is made of repeats with no obvious function. ...
File
... anaphase I; due to incorrect spindle attachment; non-separation of chromatids during anaphase II; due to centromeres not dividing; occurs during gamete/sperm/egg formation; less common in sperm than egg formation / function of parents' age; Down syndrome due to extra chromosome 21; spe ...
... anaphase I; due to incorrect spindle attachment; non-separation of chromatids during anaphase II; due to centromeres not dividing; occurs during gamete/sperm/egg formation; less common in sperm than egg formation / function of parents' age; Down syndrome due to extra chromosome 21; spe ...
Mendelian Genetics - Biology Department
... o Genotype – what alleles does that person have for that gene? o BB or bb or Bb ...
... o Genotype – what alleles does that person have for that gene? o BB or bb or Bb ...
Polyploid
Polyploid cells and organisms are those containing more than two paired (homologous) sets of chromosomes. Most species whose cells have nuclei (Eukaryotes) are diploid, meaning they have two sets of chromosomes—one set inherited from each parent. However, polyploidy is found in some organisms and is especially common in plants. In addition, polyploidy occurs in some tissues of animals that are otherwise diploid, such as human muscle tissues. This is known as endopolyploidy. Species whose cells do not have nuclei, that is, Prokaryotes, may be polyploid organisms, as seen in the large bacterium Epulopicium fishelsoni [1]. Hence ploidy is defined with respect to a cell. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Male bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores by meiosis.Polyploidy refers to a numerical change in a whole set of chromosomes. Organisms in which a particular chromosome, or chromosome segment, is under- or overrepresented are said to be aneuploid (from the Greek words meaning ""not"", ""good"", and ""fold""). Therefore the distinction between aneuploidy and polyploidy is that aneuploidy refers to a numerical change in part of the chromosome set, whereas polyploidy refers to a numerical change in the whole set of chromosomes.Polyploidy may occur due to abnormal cell division, either during mitosis, or commonly during metaphase I in meiosis.Polyploidy occurs in some animals, such as goldfish, salmon, and salamanders, but is especially common among ferns and flowering plants (see Hibiscus rosa-sinensis), including both wild and cultivated species. Wheat, for example, after millennia of hybridization and modification by humans, has strains that are diploid (two sets of chromosomes), tetraploid (four sets of chromosomes) with the common name of durum or macaroni wheat, and hexaploid (six sets of chromosomes) with the common name of bread wheat. Many agriculturally important plants of the genus Brassica are also tetraploids.Polyploidy can be induced in plants and cell cultures by some chemicals: the best known is colchicine, which can result in chromosome doubling, though its use may have other less obvious consequences as well. Oryzalin will also double the existing chromosome content.