Author: Study Clue

In early backcross generations transferring a dominant resistance gene, the practical minimum field selection criterion to keep the target gene

A breeding program’s “target population of environments (TPE)” refers to the real-world set of A Lab growth chambers B Seed

When breeders talk about “crop ideotype,” they mainly mean an ideal plant type designed for A Decorative garden use B

A key advantage of using landraces in breeding is their A High uniformity always B Zero disease incidence C Wide

Plant breeding mainly aims to improve which feature in crops A Soil pH control B Animal growth rate C Crop

In a diploid population with allele frequency p = 0.8, the expected frequency of heterozygotes under Hardy–Weinberg is A 0.16

In a diploid population of size N, the initial frequency of a new neutral mutation is A 1/N B 2/N

When selection favors a rare phenotype because it is rare in the population, the pattern is called A Directional selection

Which phrase best describes natural selection acting on a trait in a population A Differential survival, reproduction B Inheritance without

In natural selection, which trait tends to spread in a population over time A Higher fitness trait B Random trait