Question 10 Listen Of the following events, which occurs first during meiosis and the preceding interphase in a male? a) The X and Y chromosomes separate b) The X and Y chromosomes pair c) The X and Y chromosomes replicate d) The Y sisters separate
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Genetics Question 10
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- QUESTION 34 What would be predicted to be the most common cause of chromosome translocations in Meiosis? A. Incorrect resolution of chiasmata in Meiosis II B. single point mutations during Meiosis II C. nondisjunction events resulting from incorrect resolution of chiasmata in Meiosis I D. improper cleavage of the cohesion complexQuestion 2 "Independent assortment" refers to assortment of sister chromosomes at the metaphase plate in meiosis I assortment of sister chromatids at the metaphase plate in meiosis I assortment of sister chromatids at the metaphase plate in meiosis II assortment of homologous chromosomes at the metaphase plate in meiosis II assortment of homologous chromosomes at the metaphase plate in meiosis I A assortment of sister chromosomes at the metaphase plate in meiosis IIQuestion: 1 Explain why the following statements are false and reword them to be true, regarding meiosis or mitosis. 1. Sister chromatids are always identical copies of each other. 2. Each pair of sister chromatids attaches to one of the two centromeres during prometaphase. 3. A chromosome always consists of two sister chromatids.
- QUESTION 3 A cytogeneticist is studying the cells from an abnormal female monkey. In some cells, she finds that both X-chromosomes are active (i.e. not packaged into a Barr body), although one of the X-chromosomes appears shorter. She also finds that one of the autosomes are packaged as a Barr body, and she suspects that a translocation event might have been involved. By referring to the mechanism of X-chromosome inactivation, explain the observations made by the scientist.QUESTION 19 What chromosomes belong to a normal human male? O 22 autosomes and two Y chromosomes 44 autosomes and two Y chromosomes 44 autosomes, one X chromosome, and one Y chromosome 46 autosomes, one X chromosome, and one Y chromosome QUESTION 20 How many chromosomes will a cell with a diploid number of 40 have in its gametes O 40 O 20 O 5 O 10 Click Save and Submit to save and submit. Click Save All Answers to save all answers.Question 4 Consider a diploid organism with a diploid number of 30. Show your work and/or explain logic on all parts. a. How many total chromatids will be present in a typical cell at mitotic metaphase? b. How many tetrads are present in a metaphase I cell of meiosis? c. How many dyads are present in a metaphase II cell in meiosis? d. How many monads are expected in each product cell at the end of meiosis II?
- question- Color blindness is inherited as a sex-linked recessive disease. A normal male marries a female who is heterozygous for the trait. What percentage of their sons will exhibit color blindness?Question #5 Stages of MeiosisPlease help me for part a and b, thank you so much!Question 41 Which of the following statements does BEST compare the processes of mitosis and meiosis? O Mitosis involves two division cycles and results in haploid gametes, while meiosis consists of one division cycle and results in a diploid daughter cell O Mitosis involves two division cycles and results in diploid daughter cells, while meiosis consists of one division cycle and results in haploid gametes. O Mitosis involves one division cycle and results in diploid daughter cells, while meiosis consists of tavo division cycles and results in haploid gametes. O Mitosis involves one division cycle and results in haploid gametes, while meiosis consists of two division cycles and results in diploid daughter cells. Question 42 Why are glycolipids important in the cell membranes? O Glycolipid helps the cell to provide additional surface area. O Glycolipid helps the cell to regulate materials passing through the cell membrane. O Glycolipid helps the cell to store sugar molecules O…
- Question #2: Recombination is a process that creates genetic diversity during meiosis. Below is the average amount of recombination (y-axis) in several species of eukaryotes (shown on the x). SAR=Stramenopiles-Alveolates-Rhizaria Eukaryote log recombination rate (cM/MI SAR fungi other animals unseg, worms insects www molluses fishes crustaceans amphibians + reptile DO aves mammals other plants gnoliids magnolii basal eudicots superrosids superasterids lilioids+alismatids commelinids conifers a) What do you notice about the amounts of recombination in the various species? b) This paper found that recombination is positively correlated with gene density (number of genes per kb of chromosome) and negatively correlated with the density of repetitive elements (areas of the genome that are repetitive and do not encode genes). Why might this be the case? c) A cross was made between two individuals (AaBbxAaBb) where A codes for red eyes, a codes for blue eyes, B codes for curly wings, and b…QUESTION 11 A child presents a clinical indication of chronic pneumonia, low weight, persistent cough and thick mucus associated with cystic fibrosis (CF). Their older sibling has recurring sinusitis but their younger sibling and both parents are asymptomatic. Genetic testing reveals everyone in the family has several mutations on chromosome 7 where the CFTR gene is located. What explains the differences in phenotype severity observed in this family? The CFTR gene is pleiotrophic, and disease severity is determined by the recessive alleles inherited The CFTR gene is an example of incomplete dominance CF is a polygenic inherited disease, and disease severity is determined by the recessive alleles inherited CF is a polygenic inherited disease, and disease severity is determined by the dominant alleles inherited The CFTR gene is pleiotrophic, and disease severity is determined by the dominant alleles inheritedQuestion 9 Match the following with the term that best describes them Holds chromatids together in the middle ✓ DNA complexed with basic histone proteins ✓ Chromosome arrangement of the organism ✓ Noodle-like structures that appear clearly after prophase stage of mitosis A. karyotype B. chromatin C. chromosomes D. centromere