What are the three ways which can produce variant genotypes in the environment?
(N/A) The three primary ways that produce variant genotypes in a population are:
$(i)$ Gene mutations: These are sudden,stable changes in the $DNA$ sequence that create new alleles.
$(ii)$ Crossing over (recombination): This occurs during meiosis,where homologous chromosomes exchange genetic material,leading to new combinations of genes.
$(iii)$ Hybridisation: This involves the crossing of two genetically different individuals,which results in offspring with new combinations of parental genes.
$(i)$ Gene mutations: These are sudden,stable changes in the $DNA$ sequence that create new alleles.
$(ii)$ Crossing over (recombination): This occurs during meiosis,where homologous chromosomes exchange genetic material,leading to new combinations of genes.
$(iii)$ Hybridisation: This involves the crossing of two genetically different individuals,which results in offspring with new combinations of parental genes.
Explore More
Similar Questions
The maleness of a child is determined by
Easy
View SolutionBy what is the expression of tallness in the pea plant exhibited?
Easy
View SolutionIn the following crosses,write the characteristics of the progeny:
Cross Progeny $(a)$ $RR YY \times RR YY$ (Round,yellow $\times$ Round,yellow) .......... $(b)$ $Rr Yy \times Rr Yy$ (Round,yellow $\times$ Round,yellow) .......... $(c)$ $rr yy \times rr yy$ (Wrinkled,green $\times$ Wrinkled,green) .......... $(d)$ $RR YY \times rr yy$ (Round,yellow $\times$ Wrinkled,green) ..........
| Cross | Progeny |
| $(a)$ $RR YY \times RR YY$ (Round,yellow $\times$ Round,yellow) | .......... |
| $(b)$ $Rr Yy \times Rr Yy$ (Round,yellow $\times$ Round,yellow) | .......... |
| $(c)$ $rr yy \times rr yy$ (Wrinkled,green $\times$ Wrinkled,green) | .......... |
| $(d)$ $RR YY \times rr yy$ (Round,yellow $\times$ Wrinkled,green) | .......... |
Difficult
View Solution$(a)$ What is geographical isolation?
$(b)$ Illustrate the formation of a species with the help of an example where individuals become very different from each other and are no longer capable of reproduction among themselves.
$(b)$ Illustrate the formation of a species with the help of an example where individuals become very different from each other and are no longer capable of reproduction among themselves.
Difficult
View SolutionWhere are the genes located? What is the chemical nature of a gene?
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo