Which of the following statistical tests is used to determine if two genes are linked or assorting independently?单项选择题

A

Sum rule

B

Binomial expansion

C

Product rule

D

Chi-square test

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During meiosis, crossing over occurs between homologous chromosomes. The recombinant chromosome will most likely contain the same alleles as the non-recombinant chromosome if the genes are:

Question textThe following pedigree shows transmission of the autosomal dominant disorder Huntington disease along with alleles of the closely-linked molecular marker A. The granddaughter in generation III is still too young to show any symptoms of Huntington disease and would like to know if she has the disease mutation or not.If A is 2 map units from the Huntington disease (HD) locus, then recombination occurs between the A and HD loci on average Answer 1 Question 14[input] % of the time and the granddaughter in Generation III would have Answer 2 Question 14[input] % chance of inheriting the Huntington disease allele from her father, given the genotype information available.Answer 3 Question 14[input] % of her father’s gametes would contain both the A4 allele and the Huntington disease allele.Provide answers as numerals e.g. ‘1' not 'one' , do not enter the % signA is most likely a(n) Answer 4 Question 14[select: , microsatellite, SNP, RFLP] marker locus.

Parental cross: CCdd X ccDD.   These two genes are on the same chromosome.  The F1 generation is then crossed to ccdd individuals.  Which of the offspring are recombinant--they can only be produced by crossing over in the F1 parent---? P:  CCdd X ccDD   Results in the  F1:  CcDd CcDd X ccdd  Results in offspring:                  

The phenomenon of linkage defies:

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