Give differences : Crossing over and Linkage
Give differences : Crossing over and Linkage
| Crossing over | Linkage |
| $(1)$ It leads to separation of linked genes. | $(1)$ Keeps the genes together. |
| $(2)$ It involves exchange of segments between non sister chromatids of homologous chromosomes. | $(2)$ It involves individual chromosomes. |
| $(3)$ The frequency of crossing over can never exceed $50 \%$. | $(3)$ The number of linkage group can never be more than haploid chromosome number. |
| $(4)$ It increases variability by forming new gene combinations. | $(4)$ It reduces variability. |
Similar Questions
Discuss in detail the contributions of Morgan and Sturtevant in the area of genetics.
Discuss in detail the contributions of Morgan and Sturtevant in the area of genetics.
Morgan hybridised yellow-bodied, white-eyed females to brown-bodied, red-eyed males and intercrossed their $F_{1}$ progeny. He observed that
$(a)$ $F_{2}$ ratio was deviated very significantly from the $9 : 3 : 3 : 1$ ratio
$(b)$ Both genes did not segregate independently of each other
$(c)$ Recombinant types are not obtained in $F_{2}$ generation
$(d)$ Both genes segregate independently of each other
Select the correct set of statements :
Morgan hybridised yellow-bodied, white-eyed females to brown-bodied, red-eyed males and intercrossed their $F_{1}$ progeny. He observed that
$(a)$ $F_{2}$ ratio was deviated very significantly from the $9 : 3 : 3 : 1$ ratio
$(b)$ Both genes did not segregate independently of each other
$(c)$ Recombinant types are not obtained in $F_{2}$ generation
$(d)$ Both genes segregate independently of each other
Select the correct set of statements :
Crossing over is
Crossing over is
The percentage of crossing over will be more if
The percentage of crossing over will be more if
On the basis of Mendel's work which of the following laws were formulated?
$I.$ Linkage
$II.$ Segregation
$III.$ Incomplete dominance
$IV.$ Independent assortment
Choose the correct option
On the basis of Mendel's work which of the following laws were formulated?
$I.$ Linkage
$II.$ Segregation
$III.$ Incomplete dominance
$IV.$ Independent assortment
Choose the correct option