The movement of a gene from one linkage group to another is called
translocation
crossing over
inversion
duplication.
A hereditary disease, which is never passed on from father to son is
One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of ${F_2}$ progenies that mutation is found in
A medical technician while observing a human blood smear under the microscope notes the presence of barrbody close to the nuclear membrane in the $WBC$. This indicates that person under investigation is
In Drosophila, the allele for a normal grey body colour $G$ is dominant to ebony body $g.$ The following table summarises the results of several crosses
S.No | Cross | Result |
$I.$ | Strain $1 \times$ gg | All wild type |
$II.$ | Strain $2 \times$ gg |
$1$ wild type $:\;1$ ebony |
$III.$ | Strain $3 \times$ gg | All ebony |
$IV.$ | Strain $4 \times$ Gg |
$3$ wild type $:\,1$ ebony |
Which strains both have the genotype Gg?
Genes that are similar in phenotypic effect when present separately, but together interact to produce a different trait and ratio is $9 : 7$ in $F_2$ generation. What are such genes known as