A. Allopolyploid
B. Amphidiploids
C. End polyploidy
D. Aneupoidy
Plant Breeding and Genetics
The spread of genes from one breeding population to another by migration which may result in changes in gene frequency is called………………?
A. Gene flow
B. Genetic drift
C. Gene frequency
D. None of the above
Absence of chlorophyll in a plant is known as………………?
A. Acrodsome
B. Albinism
C. A gouri
D. None of the above
Gynandromorphy in Drosophila because of……………..?
A. Loss of X-chromosome
B. Kappa particles
C. inheritance
D. Gain of Y-chromosome
Linkage of hereditary units was discounted by………………?
A. W. Batson and B.C Pun net
B. T.B. Morgan and G. Mendel
C. W.S. Sutton and K. R. Porter
D. C.B. Bridges and G.H. Shull
Among the following the test cross is……………..?
A. TTxTT
B. TTxTt
C. TtxTt
D. Ttxtt
In crop improvement programmed haploids are of great importance because they………………?
A. Are useful in studies on meiosis
B. Give homozygous lines following diplodization
C. Grow better under adverse conditions
D. Require only about half the amount of chemical fertilizers compared to diploids
The crossing of a yomozygous tall plant and a homozygous dwarf plant would yield plants in the ratio of……………..?
A. 2 tall: 2 dwarf
B. All homozygous dwarf
C. All the heterozygous tall
D. One homozygous tall, one homozygous dwarf, two heterozygous tall
The new crop critical has been evolved by intervener hybridization between……………………?
A. Wheat & rice
B. Rye & Wheat
C. Wheat & Anglos
D. Rice & maize
Mendel studied contrasting characters for his breeding cxperiments with peas which of the following character he did not study……………?
A. Pod color
B. Pod shape
C. Plant height
D. Leaf shape