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In corn small pollen sp is recessive to normal pollen

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25. In corn, small pollen (sp) is recessive to normalpollen (sp+) and banded necrotic tissue, called ze-bra necrotic (zn), is recessive to normal tissue (zn+).The genes that produce these phenotypes are closelylinked on chromosome 10. If no crossing over occursbetween these two loci, give the types of progenyexpected from the following cross:×a. sp+ zn+/sp zn; sp zn/sp znb. sp+ zn/sp zn; sp zn+/sp znc. sp+ zn+/sp+ zn+; sp+ zn+/sp zn; sp zn/sp znd. sp+ zn/sp+ zn;sp+ zn/sp zn+;sp zn+/sp+ zn; spzn+/sp zn+e. sp+ zn+/sp zn; sp+ zn/sp zn
26.26. In flower beetles, pygmy (py) is recessive to normalsize (py+), and red color (r) is recessive to brown (r+).A beetle heterozygous for these characteristics wastest crossed to a beetle homozygous for pygmy andred. The following are progeny phenotypes from thistestcross.Carry out a series of chi-square tests to determineif there is equal segregation of alleles at the py lo-cus.What is the correct chi-square value and howmany degree(s) of freedom should be used in its in-terpretation?
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genetics chapter 7Study online at c. 0.48 with one degree of freedomd. 0.48 with two degrees of freedome. 4.56 with one degree of freedom27.27. In flower beetles, pygmy (py) is recessive to normalsize (py+), and red color (r) is recessive to brown (r+).A beetle heterozygous for these characteristics wastest crossed to a beetle homozygous for pygmy andred. The following are progeny phenotypes from thistestcross.Carry out a series of chi-square tests to determine ifthe two loci are assorting independently. What is thecorrect chi-square value and how many degree(s) offreedom should be used in its interpretation?py+ r+ 180py+ r 22py r+ 19py r 191Total 412

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Term
Fall
Professor
HYDE
Tags
Genetic linkage, B prophase

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