Homework Answers
7-8 Monohybrid cross is the breeding between parents which differ in one specific trait, so both are heterozygous at only one locus.It is used to study the pattern of inheritance in F1 and F2 offspring in a predictible way
Dihybrid cross takes place between parents that differ in two traits, so they are heterozygous for 2 different characters.One of them has dominant genes and the other one has recessive genes for both traits.
This cross is helpful for studying inheritance of dominant and recessive characters for 2 different traits, given you the chance of finding all possible genotypic combinations
9-10 Homologous chromosomes are 2 different copies of the same chromosome but with different origin, one maternal and the other copy has a paternal origin that pairs during meiosis. Both copies have the same genes in the same loci .
Chromatid sisters are identical copies formed by replication of 1 chromosome ( so they derived from one original
chromosome) Each copy ( chromatid) are joined together by a centromere. So, 2 chromatides are part of 1 chromosome
11-12 Complete linkage is the result of parental combination only and NO recombination . Occurs because the segregated traits are close together in the chromosome that they are segregated together it results in an independent assorment of the linked characters.
Incomplete linkage occurs when the loci of different traits recombinate during the formation of cross over between homologous chromosomes producing new combinations of genes
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II.- Compare and Contrast the following terms: 7-8. Monohybrid and Dihybrid Cross 9-10. Homologous chromosome and...
7. During meiosis II, Points: 1 @ sister, chrom sister chromatids of each chromosome are separated...
7. During meiosis II, Points: 1 @ sister, chrom sister chromatids of each chromosome are separated from each other. cytokinesis results in the formation of a total of two cells. (C) homologous chromosomes separate. sister chromatids exchange parts. E) homologous chromosomes pair up. 10 Shown below is a cell under going of meiosis. Points: 1 prophase II telophase telophase II prophase
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10....
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10. During meiosis, the chromosome number: a) is doubled b) is reduced c) remains the same d) becomes diploid 11. Meiosis produces haploid (#) reproductive cells called _ 12. Name the 2 human gametes & tell their chromosome number. 13. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 14. How many times do cells divide during meiosis? 15. What...
7) Chromosome I from your mother and chromosome I from your father are said to be homologous
7) Chromosome I from your mother and chromosome I from your father are said to be homologous. This is because the chromosomes: A) appear the same size in a karyotype. B) have different genes on them. C) have the same genes on them. D) determine the sex of the child. 8) Why do karyotypes always show chromosomes at the point when cell division is about to occur? A) This is the only cell cycle point in which the chromosomes are unduplicated. B) The...
7. Name the event of meiosis that ensures that the chromosome number is reduced. 8. During...
7. Name the event of meiosis that ensures that the chromosome number is reduced. 8. During which stage of meiosis does each of the following events occur? 2. Synapsis b. Crossing-over . c. Segregation of homologous chromosomes d. Reduction from diploid to haploid e. Separation of chromatids f. Independent assortment of homologous chromosomes. 9. Many people have the misconception that a dominant allele must be the most common in a population. Address this misconception by using the finger number trait...
7. What are chiasmata in a nucleus going through meiosis? a. they are sites where non-sister...
7. What are chiasmata in a nucleus going through meiosis? a. they are sites where non-sister chromatids can exchange genetic material during meiosis. b. they are sites where sister chromatids can exchange genetic material during meiosis. c. they ensure that homologous chromosomes remain homologous after meiosis. d. they increase genetic variation among the products of mitosis. e. they prevent sister chromatids from separating. 8. A chromatid is: a. one of the pairs of homologous chromosomes. b. a homologous chromosome. c....
1. Which of the following ligands bind to internal receptors A. serotonin B. epinephrine C....
1. Which of the following ligands bind to internal receptors A. serotonin B. epinephrine C. aldosterone D. adrenalin 2. T/F: benign tumors are made of transformed cells Comparison: The following paired statements are to be compared in a quantitative sense. In each case choose: “A” if “a” is greater than “b” “B” if “b” is greater than “a” “C” if “a” and “b” are equal or nearly equal 3. A. The speed of getting an endocrine...
Experiment 3: Following Chromosomal DNA Movement through Meiosis In this experiment, you will follow the movement...
Experiment 3: Following Chromosomal DNA Movement through Meiosis In this experiment, you will follow the movement of the chromosomes through meiosis I and II to create gam- etes. Materials Procedure Trial 1 As prophase I begins, the replicated chromosomes coil and condense... 1. Build a pair of replicated, homologous chromosomes. 10 beads should be used to create each individual sister chromatid (20 beads per chromosome pair). The five-holed bead represents the centromere. To do this... For example, suppose you start...
2 BIO 302 MIDTERM (CH 7-8) 1 Cause of familial Down syndrome is 2. Gain of...
2 BIO 302 MIDTERM (CH 7-8) 1 Cause of familial Down syndrome is 2. Gain of single chromosome leads to 7 Cotton plant is an example of Triploidy B. Trisomy C.Translocation A Trisomy B. Allopolyploidy C. Amphidiploidy D. Pentaploidy A. Diploidy B.Triploidy C. Tetraploidy D. Trisomy E Monosomy What is "normal chromosome number? 18. What doesn't happen in endopolyploidy'or 3. Diploidy B. Triploidy C. Tetraploidy D. Trisomy EMonosomy 4. Multiple of same genome could be termed as A. Division of...
Experiment 3: Following Chromosomal DNA Movement through Meiosis In this experiment, you will follow the movement...
Experiment 3: Following Chromosomal DNA Movement through Meiosis In this experiment, you will follow the movement of the chromosomes through meiosis I and II to create gametes Materials 2 Sets of Different Colored Pop-it® Beads (32 of each - these may be any color) 4 5-Holed Pop-it® Beads (used as centromeres) Procedure Trial 1 As prophase I begins, the replicated chromosomes coil and condense... Build a pair of replicated, homologous chromosomes. 10 beads should be used to create each individual...
7. Using a single line (I) to represent a chromosome and two crossed lines (x) to...
7. Using a single line (I) to represent a chromosome and two crossed lines (x) to represent two sister chromatids joined together into a single chromosome, diagram the arrangement of your experimental chromosomes through the process of meiosis. Interphase Prophase through telophasel Melosis daughter cells and Melosisi Melosis #1 daughter cells 8. Using your completed diagram from Question 7 answer the following questions associated with meiosis 1: a. What is the number of chromosomes in each daughter cell? b. Does...
7. During meiosis II, Points: 1 @ sister, chrom sister chromatids of each chromosome are separated from each other. cytokinesis results in the formation of a total of two cells. (C) homologous chromosomes separate. sister chromatids exchange parts. E) homologous chromosomes pair up. 10 Shown below is a cell under going of meiosis. Points: 1 prophase II telophase telophase II prophase
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10. During meiosis, the chromosome number: a) is doubled b) is reduced c) remains the same d) becomes diploid 11. Meiosis produces haploid (#) reproductive cells called _ 12. Name the 2 human gametes & tell their chromosome number. 13. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 14. How many times do cells divide during meiosis? 15. What...
7. Name the event of meiosis that ensures that the chromosome number is reduced. 8. During which stage of meiosis does each of the following events occur? 2. Synapsis b. Crossing-over . c. Segregation of homologous chromosomes d. Reduction from diploid to haploid e. Separation of chromatids f. Independent assortment of homologous chromosomes. 9. Many people have the misconception that a dominant allele must be the most common in a population. Address this misconception by using the finger number trait...
2 BIO 302 MIDTERM (CH 7-8) 1 Cause of familial Down syndrome is 2. Gain of single chromosome leads to 7 Cotton plant is an example of Triploidy B. Trisomy C.Translocation A Trisomy B. Allopolyploidy C. Amphidiploidy D. Pentaploidy A. Diploidy B.Triploidy C. Tetraploidy D. Trisomy E Monosomy What is "normal chromosome number? 18. What doesn't happen in endopolyploidy'or 3. Diploidy B. Triploidy C. Tetraploidy D. Trisomy EMonosomy 4. Multiple of same genome could be termed as A. Division of...
7. Using a single line (I) to represent a chromosome and two crossed lines (x) to represent two sister chromatids joined together into a single chromosome, diagram the arrangement of your experimental chromosomes through the process of meiosis. Interphase Prophase through telophasel Melosis daughter cells and Melosisi Melosis #1 daughter cells 8. Using your completed diagram from Question 7 answer the following questions associated with meiosis 1: a. What is the number of chromosomes in each daughter cell? b. Does...
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