#Question id: 11490
#Unit 2. Cellular Organization
#Question id: 31111
#Unit 2. Cellular Organization
#Question id: 4862
#Unit 8. Inheritance Biology
In guinea pigs, white coat (w) is recessive to black coat (W) and wavy hair (v) is recessive to straight hair (V). A breeder crosses a guinea pig that is homozygous for white coat and wavy hair with a guinea pig that is black with straight hair. The F1 are then crossed with guinea pigs having white coats and wavy hair in a series of testcrosses. The following progeny are produced from these testcrosses:
black, straight - 220 black, wavy -30
white, straight -30 white, wavy- 220
If the genes are not assorting independently, what is the distance between coat color and hair shape governing gene
#Question id: 1772
#Unit 4. Cell Communication and Cell Signaling
J chain is present in?
#Question id: 804
#Unit 1. Molecules and their Interaction Relevant to Biology
With respect to microRNAs, which, if any, of the following statements, is false?
a) A microRNA normally works by binding to perfectly complementary sequences within an RNA transcript, usually an mRNA.
b) Like the great majority of mRNAs an miRNA is usually produced as a larger precursor RNA that is capped and has a 3’ poly(A) tail.
c) The precursor miRNA undergoes different types of post-transcriptional cleavage by endoribonucleases that are specific for double-stranded target sequences.
d) A nuclear endoribonuclease called dicer cleaves the miRNA precursor so that it forms a stem-loop RNA.