Chromosomal Genetics

Topic Page

Questions

• What are four types of chromosomal mutations?
• What is the cause of cleft lips and palates?
• Describe what happens to chromosomes during single and double crossovers. Would we expect to see these happen in gamete (sperm and egg) formation or in body cells?
• What chromosome does autism occur on?
• In genetics, what is a trisomy?
• What are XX and XY chromosomes?
• What is a sexlinked trait?
• What chromosome is color blindness attributed to?
• What is the general term for a condition where the chromosome number is not a multiple of a complete set?
• What is genetically similar and different about these structures that have been separated to opposite poles of the cell during anaphase I?
• The body cells of a hamster have 44 chromosomes. How many chromosomes would the gametes of a hamster have?
• Chromosomes usually appear in pairs. If there are three chromosomes where there should be two, what kind of mutation is this?
• If a recessive genetic disease occurs much more frequently in men than women, which chromosome should be studied as a possible source of the disease?
• What results from crossing experiments would suggest 2 loci are on the same chromosome?
• If a man has a recessive sexlinked disorder, he has a 0% chance of passing it onto his son. Why?
• If an autosome is present in only one copy at conception, that individual will not develop to term. Yet human males have only one copy of the X chromosome and they do develop normally. Why is there a difference?
• What disorders are caused from too many or too few sexchromosomes?
• How do autosomal chromosomes differ from sex chromosomes?
• What happens to characteristics found in one generation of a species as it reproduces and has offspring?
• Question #5844c
• Why do we abbreviate trisomy as n + 1?
• Question #674c2
• Genetic material DNA is contained in our chromosomes. What is the most important role of these chromosomes?
• Are the sex chromosomes present only in sex cells or in the somatic cells as well?
• How many pairs of chromosomes are present in the somatic cells? Are the last pair of chromosomes present in the reproductive cells only?
• Why do we need 2 sets of a single chromosome?
• Why does it exist two types of chromatin?
• Question #822fa
• Question #8dd39
• Question #58371
• What is polyploidy?
• Pair of genes(allele) are present on only one chromosome or on homologous chromosomes?
• Are linked genes the ones that are linked with genes on the same chromosome or with genes on the homologous chromosome?
• A tetra-hybrid plant produces fruits of 1 kg while minimum weight is 400 g. What will be the maximum weight of a fruit ? (1) 600 g (2) 1600 g (3) 1200 g (4) 1800 g
• A sperm cell of an alligator has 16 chromosomes.what is the total number of chromosomes normally present in a stomach cell of this alligator? A)8 B)16 C)32 D)48