question archive The majority of calico cats are female
The majority of calico cats are female
Subject:BiologyPrice: Bought3
The majority of calico cats are female. However, a few rare males are observed.
a) What could be the karyotype of a male calico cat? Note: Cat haploid (n) = 19, and chromosomal sex is determined the same as in humans with XX (female) and XY (male).
b) Taking into consideration your answer to part a, describe the reason a male cat could be calico. Your answer should discuss the gene locus for coat color, the required genotype for coat color, and the genetic mechanism by which the calico phenotype is produced.
The chromosome designation 9q23 refers to
Select one:
a. None of the answers are correct.
b. the major band 23 on a chromosome.
c. the sub-band 9
d. the short arm of chromosome 9.
e. the sub-sub band “23” on chromosome 9.
A chromosome region in the heterochromatin form is...
Select one:
a. less tightly compacted (relaxed) DNA that up regulates gene expression
b. less tightly compacted (relaxed) DNA that down regulates gene expression
c. highly compacted DNA that down regulates gene expression
d. highly compacted DNA that up regulates gene expression
DNA methylation of CpG islands could create regions of heterochromatin by recruiting histone deacetylases (HDACs).
Select one:
a. False
b. True
