Give two examples of duplication genes that have evolved.
Give two examples of duplication genes that have evolved.
Homework Answers
During gene duplication , a segment of DNA is copied again. This leads to production of gene families during evolution. This may happen due to uneven crossing over or viral insertion of genes resulting in doubling of the gene. During meiosis non disjunction is another mechanism for the duplication of genes.
Hemoglobin molecule present in the RBCs seem to have formed by gene duplication. One hemoglobin molecule has four polypeptide chains. Two alpha and two beta chains. The alpha and beta genes seem to have evolved by duplication.
Duplication of the gene is seen in Opsin gene which led to trichromatic color vision in primates. Opsin gene duplications are present in many other animals like teleost fish.
Give two examples of tumour suppressor genes and two examples of oncogenes, describe their action, and...
Give two examples of tumour suppressor genes and two examples of oncogenes, describe their action, and indicate cancers in which they are inactivated.
Give two examples about inducible/repressible gene expression. Explain the function of the genes, the mechanism of...
Give two examples about inducible/repressible gene expression. Explain the function of the genes, the mechanism of the regulation, and why it is important to have a way to control the level of gene expression.
How does the duplication of genes and /or genomes allow for the evolution of genomes?
How does the duplication of genes and /or genomes allow for the evolution of genomes?
1. Define deletion, duplication, inversion and translocation and give examples (6 points) 2. A diploid corn...
1. Define deletion, duplication, inversion and translocation and give examples (6 points) 2. A diploid corn plant has 12 chromosomes. How many total chromosomes would you expect in the following com plants? (3 points) A. Trisomy 7 = B. Tetraploid = C. 3n- D. Monosomy 5 = E. 4n+1 = F. Trisomy 1 and Monosomy 2 = 3. Describe two different experimental strategies to create an allotetraploid from two different diploid species of plants (4 points) 4. Three genes are...
Which of the following is a false statements about tumor suppressor genes? Gene amplification (duplication) of...
Which of the following is a false statements about tumor suppressor genes? Gene amplification (duplication) of a tumor suppressor gene is less likely to result in cancer than gene amplification of a proto-onocogene. Individuals with a single normal copy of a tumor suppressor gene are more prone to cancer than those with two normal copies. Inactivation of tumor suppressor genes can lead to enhanced cell survival and cell proliferation. Epigenetic changes that silence tumor suppressor genes would not lead to...
Genes that have conserved synteny are always _______. Genes that have conserved synteny are always _______....
Genes that have conserved synteny are always _______. Genes that have conserved synteny are always _______. are located within a chromosomal inversion are in the same order across multiple species found on the same chromosome across multiple species arose by gene duplication SubmitRequest Answer
1. What are homeotic genes? Provide two examples of such genes. 2. Describe the roles in...
1. What are homeotic genes? Provide two examples of such genes. 2. Describe the roles in patterning of the following genes in Drosophila: A)Bicoid B)Oskar C)Nanos D)Hunchback E)Eve F)Kruppel G)Giant H)Knirps
14. List examples of homoplasious traits (i.e. traits that have evolved independently) in lycophytes and seed...
14. List examples of homoplasious traits (i.e. traits that have evolved independently) in lycophytes and seed plants. 15. Illustrate the life cycle of gymnosperms. 16. Describe at least two major vascular plant taxa without seeds and explain why seedless nonvascular plants are a paraphyletic group. Draw a phylogeny to illustrate your arguments.
By which 3 mechanisms do bacteria achieve genetic diversity? Give 2 examples of types of genes/gene...
By which 3 mechanisms do bacteria achieve genetic diversity? Give 2 examples of types of genes/gene products acquired by these mechanisms?
Define a vector. Give two examples of scalars that you have used recently.
Define a vector. Give two examples of scalars that you have used recently.
1. Define deletion, duplication, inversion and translocation and give examples (6 points) 2. A diploid corn plant has 12 chromosomes. How many total chromosomes would you expect in the following com plants? (3 points) A. Trisomy 7 = B. Tetraploid = C. 3n- D. Monosomy 5 = E. 4n+1 = F. Trisomy 1 and Monosomy 2 = 3. Describe two different experimental strategies to create an allotetraploid from two different diploid species of plants (4 points) 4. Three genes are...
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