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March 2019

Many groups of insects have developed resistance to DDT and other insecticides as a result of____________________?

Agriculture Mcqs, Plant Breeding and Genetics /
Many groups of insects have developed resistance to DDT and other insecticides as a result of____________________?

A. Crossing over
B. Polyploidy
C. Segregation
D. Gene mutation

Many groups of insects have developed resistance to DDT and other insecticides as a result of____________________? Read More »

Agriculture Mcqs, Plant Breeding and Genetics

Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?

Agriculture Mcqs, Plant Breeding and Genetics /
Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?

A. Linkage and crossing over
B. Presence of multiple alleles
C. Presence of lethal genes
D. Sex-linkage

Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ? Read More »

Agriculture Mcqs, Plant Breeding and Genetics

A species or type of a plant derived from doubling the chromosome of the F1 hybrid of two known species is known as__________________?

Agriculture Mcqs, Plant Breeding and Genetics /
A species or type of a plant derived from doubling the chromosome of the F1 hybrid of two known species is known as__________________?

A. Autodiploid
B. Hexaploid
C. Autopolyploid
D. Amphidiploid

A species or type of a plant derived from doubling the chromosome of the F1 hybrid of two known species is known as__________________? Read More »

Agriculture Mcqs, Plant Breeding and Genetics

One of the following is not an advantage of genetic engineering___________________?

Agriculture Mcqs, Plant Breeding and Genetics /
One of the following is not an advantage of genetic engineering___________________?

A. Microbes act as biological factories
B. Improvement of crop can take place
C. The gene pool is maintained
D. Genetic error can be rectified

One of the following is not an advantage of genetic engineering___________________? Read More »

Agriculture Mcqs, Plant Breeding and Genetics

When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________?

Agriculture Mcqs, Plant Breeding and Genetics /
When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________?

A. Albinism is dominant over green characters
B. Green plastids of male parent become nitrated
C. Plastids are inherited through maternal parents
D. Crossing over results in structural changes in green plastids

When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________? Read More »

Agriculture Mcqs, Plant Breeding and Genetics