If you ignore the effect of crossing over, would you expect the genetic information in the secondary oocyte and the first polar body to be identical?
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Q: would you expect the genetic information in the secondary oocyte and the first polar body to be…
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If you ignore the effect of crossing over, would you expect the genetic information in the secondary oocyte and the first polar body to be identical?
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- If you ignore the effect of crossing over, would you expect the genetic information in the secondary oocyte and the first polar body to be identical? Explain your answer completely.When is the only time crossing over can occur?During meiosis, does random assortment occur before or after crossing-over?
- If you ignore the effect of crossing over, would you expect the genetic information in the two secondary spermatocytes derived from a primary spermatocyte to be identical? Explain your answer completely.In which event would you see approximately equal amounts of parental and no-parental gametes being produced from the F1 generation?Some individuals grow ear hair later in life, the gene for this trait is beleived to be carried on the Y chromosome. Assuming that the gene for hairy ears is on the Y chromosome, what is the probability that a man with hairy ears will pass this trait on to his sons? What is the probability he will pass this trait onto his daughters?
- Will any of the XY offspring be heterozygous (carriers) for that trait? Will any express it?Place the events of crossing over in the correct orderIn the cross between a female AaBbccDdee and male AabbCcDdee, what proportion of the progeny are expected to be phenotypically identical to the female parent?
- What is the relationship between non-disjunction, changes in chromosome number and miscarriage? Why does this happen more in females? How does maternal age change the outcome? Why?On average, what proportion of the genome in the following pairs of humans would be exactly the same if no crossing over took place? (For the purposes of this question only, we will ignore the special case of the X and Y sex chromosomes and assume that all genes are located on nonsex chromosomes.) Q. Two full siblings (offspring that have the same two biological parents)Do the genes of the X and Ychromosomes determine onlysex characteristics?