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Familial down syndrome is due to a Robesonian...
A cytogenetic study of Down syndrome determined that 46 of 1021 cases were the result of transloc...
A cytogenetic study of Down syndrome determined that 46 of 1021 cases were the result of translocations. The most frequent translocation was symbolized as t(14;21). A. What does t(14;21) mean? B. How many chromosomes total would you expect to be present in a Down syndrome individual with this translocation (normal humans have 46)? C. Draw the complement of chromosomes 14 and 21 in a Down syndrome translocation individual. (Hint: they’re diploid for 14.) D. Draw the chromosomes 14 and 21...
19) Trisomy 21, or Down syndrome, occurs when there is a nom complement but one (extra)...
19) Trisomy 21, or Down syndrome, occurs when there is a nom complement but one (extra) chromosome 21. Although fertility is reduced in both sexes, females have higher fertility rates than males. Van Dyke et al. (1995; Down Syndrome Research and Practice 3(2):65-69) summarize data involving children born of Down syndrome individuals. Assume that children are born to a female with Down syndrome and a normal 46-chromosome male. What proportion of the offspring would be expected to have Down syndrome?...
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...
true or false, please give explaination TRUE/FALSE. Explain why the answer is true or false. 3)...
true or false, please give explaination
TRUE/FALSE. Explain why the answer is true or false. 3) True or False: Assume that a species has a diploid chromosome number of 24. The term applied to an individual with 25 chromosomes would be triploid. 4) True or False: Inversions suppress crossing over by providing a chemical imbalance because of breakpoints within certain genes. e or False: Individuals with familial Down syndrome are trisomic and have 47 chromosomes. 6) True or False: An...
2. (5 PTS) You are presented with a patient, named Gerry, who has Down syndrome (trisomy 21). You determine that the no...
2. (5 PTS) You are presented with a patient, named Gerry, who has Down syndrome (trisomy 21). You determine that the nondisjunction event occurred in his mother, named Mary, during meiosis I. a. You are interested in the TPTE gene, which is near the centromere of chromosome 21. Virtually no recombination occurs between the centromere and the TPTE gene. Mary has two different alleles of the TPTE gene. Would Gerry's two chromosome 21s from his mother have the same or...
Questions 26 and 27 please 26. Two phenotypically unaffected parents produce two children with familial Down...
Questions 26 and 27 please
26. Two phenotypically unaffected parents produce two children with familial Down syndrome. With regard to chromosomes 14 and 21, which genotype pairing could NOT be the parents in this family: A. B. Male 14, 21 and T(14;21) - Male T(14;21) and T(14;21) - Male 14, 21 and T(14;21) - Male 14, 14, 21, 21 Female 14, 14, 21, 21 Female 14, 14, 21, 21 Female 14, 21 and T(14;21) Female 14, 21 and T(14;21) C....
Aneuploidy of an autosome is always more harmful than an aneuploidy of a sex chromosome. One...
Aneuploidy of an autosome is always more harmful than an aneuploidy of a sex chromosome. One of the explanations as to why sex-chromosome aneuploids are less harmful is due to X inactivation. X-inactivation assures that all human cells only express a single X chromosome regardless of how many X chromosomes are present. Interestingly, sex chromosome aneuploids (i.e. XXY, XO) still have some different phenotypes compared to either an XX or XY individual. For instance, XXY individuals (Klinefelter Syndrome) are taller, have...
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...
please solve this asap thank you so much 1 Draw out the phases of meiosis for...
please solve this asap thank you so much
1 Draw out the phases of meiosis for a (2n=4) germ line cell: Use red and blue to indicate ate the two sets of chromosomes aleat There should be two throughout the various phases-red will represent the maternal set and blue will represent the paterials alternate scenarios for how the homologous pairs could alian during metaphase. When applicable, bus pairs could alian during metaphase. When applicable, all of the phase drawings (pre-...
I need answers for 13 to 15. Thank you 13. Deletion, Translocation, Inversion, Duplication, OR Mosaicism?...
I need answers for 13 to 15. Thank you
13. Deletion, Translocation, Inversion, Duplication, OR Mosaicism? Involved in 46, 5p- May result in a position effect which affects gene expression May result in pseudodominance of allele normally recessive to a dominant allele Two genetically distinct populations of cells in a single individual Will result in abnormal gamete formation (more than one answer) Involved in familial Down syndrome Lethal if it occurs in the same region of two homologous chromosomes No...
19) Trisomy 21, or Down syndrome, occurs when there is a nom complement but one (extra) chromosome 21. Although fertility is reduced in both sexes, females have higher fertility rates than males. Van Dyke et al. (1995; Down Syndrome Research and Practice 3(2):65-69) summarize data involving children born of Down syndrome individuals. Assume that children are born to a female with Down syndrome and a normal 46-chromosome male. What proportion of the offspring would be expected to have Down syndrome?...
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...
true or false, please give explaination
TRUE/FALSE. Explain why the answer is true or false. 3) True or False: Assume that a species has a diploid chromosome number of 24. The term applied to an individual with 25 chromosomes would be triploid. 4) True or False: Inversions suppress crossing over by providing a chemical imbalance because of breakpoints within certain genes. e or False: Individuals with familial Down syndrome are trisomic and have 47 chromosomes. 6) True or False: An...
2. (5 PTS) You are presented with a patient, named Gerry, who has Down syndrome (trisomy 21). You determine that the nondisjunction event occurred in his mother, named Mary, during meiosis I. a. You are interested in the TPTE gene, which is near the centromere of chromosome 21. Virtually no recombination occurs between the centromere and the TPTE gene. Mary has two different alleles of the TPTE gene. Would Gerry's two chromosome 21s from his mother have the same or...
Questions 26 and 27 please
26. Two phenotypically unaffected parents produce two children with familial Down syndrome. With regard to chromosomes 14 and 21, which genotype pairing could NOT be the parents in this family: A. B. Male 14, 21 and T(14;21) - Male T(14;21) and T(14;21) - Male 14, 21 and T(14;21) - Male 14, 14, 21, 21 Female 14, 14, 21, 21 Female 14, 14, 21, 21 Female 14, 21 and T(14;21) Female 14, 21 and T(14;21) C....
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...
please solve this asap thank you so much
1 Draw out the phases of meiosis for a (2n=4) germ line cell: Use red and blue to indicate ate the two sets of chromosomes aleat There should be two throughout the various phases-red will represent the maternal set and blue will represent the paterials alternate scenarios for how the homologous pairs could alian during metaphase. When applicable, bus pairs could alian during metaphase. When applicable, all of the phase drawings (pre-...
I need answers for 13 to 15. Thank you
13. Deletion, Translocation, Inversion, Duplication, OR Mosaicism? Involved in 46, 5p- May result in a position effect which affects gene expression May result in pseudodominance of allele normally recessive to a dominant allele Two genetically distinct populations of cells in a single individual Will result in abnormal gamete formation (more than one answer) Involved in familial Down syndrome Lethal if it occurs in the same region of two homologous chromosomes No...
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