#Question id: 29098
#Unit 8. Inheritance Biology
A family in which club foot was inherited as an autosomal dominant trait. They discovered a mutation in the PITXI gene that caused club foot in this family. Through DNA testing, they determined that 11 people in the family carried the PITXI mutation, but only 8 of these people had club foot. Which of the following is the correct interpretation of the observation?
#Question id: 29099
#Unit 8. Inheritance Biology
The type of plumage found in mallard ducks is determined by three alleles at a single locus: MR, which encodes restricted plumage; M, which encodes mallard plumage; and md, which encodes dusky plumage. The restricted phenotype is dominant over mallard and dusky; mallard is dominant over dusky (MR > M > md). The expected phenotypes and proportions of offspring is 3/4 restricted, 1/4 mallard by which of the following crosses?
#Question id: 29100
#Unit 8. Inheritance Biology
#Question id: 29101
#Unit 8. Inheritance Biology
A cross between two yellow heterozygous mice produces an initial genotypic ratio of 1/4 YY, 1/2 Yy, and 1/4 yy, the F1 progeny showing lethality in their ratio, if F1 yellow heterozygous mate with nonyellow mice what will be the ratio in F2 generation?
#Question id: 29102
#Unit 8. Inheritance Biology
In mice Igf2 gene which encodes a protein called insulin like growth factor II (Igf2). Offspring inherit one Igf2 allele from their mother and one from their father The paternal copy of Igf2 is actively expressed in the fetus, but the maternal copy is not expressed. which of the following is correct about this gene?
a) this is an example of genomic imprinting and showing maternal imprinted
b) this is an example of genomic imprinting and showing paternal imprinted
c) mechanism of imprinting is due to the addition of methyl (CH3) groups to DNA nucleotides
d) mechanism of imprinting is due to changing the nucleotide sequences
#Question id: 4799
#Unit 8. Inheritance Biology
You set up a mapping cross involving your favorite gene (YFG) in Neurospora and determine the following octad types: 4:4 arrangement 83; 2:4:2 arrangement 7; 2:2:2:2 arrangement 10. What is the distance between your gene and the centromere?