Mutations involving the addition or loss of entire sets of chromosomes are known as______________?
Show answer Hide answer
Answer: B. Euploidy
Explanation
Euploidy specifically describes genetic mutations involving the gain or loss of complete chromosome sets. This condition alters the baseline ploidy level of an organism from haploid to polyploid. Such chromosomal alterations affect entire genomic complements rather than single isolated chromosome pairs. Organisms with multiple complete sets of chromosomes are widely known in biology as polyploids. This genetic phenomenon plays a major role in the natural evolution of flowering plants. Agricultural scientists frequently induce euploidy to generate larger and more productive crop plant varieties.
Seedless watermelon varieties are commercially produced by utilizing specific euploid chromosomal manipulation breeding techniques. Plant breeding programs rely heavily on euploidy to enhance desirable agronomic traits and yields. Understanding these chromosomal changes helps researchers study speciation mechanisms in wild plant populations. Aneuploidy involves the addition or loss of only individual chromosomes rather than complete sets. Trisomy is a specific type of aneuploidy where an individual possesses three individual homologous chromosomes. Stating all the above is incorrect because aneuploidy and trisomy describe different chromosomal mutations.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
Related questions
Q1. Enzymatic activity within fresh produce typically decelerates when temperatures drop to___________________?
Show answer Hide answer
Answer: C. Above 30ºC
Enzymatic activity in fresh produce slows down significantly at lower refrigeration temperatures rather than above 30 degrees Celsius.
Q2. The buffalo strain locally recognized as Panj Kalyan corresponds to _____________________?
Show answer Hide answer
Answer: B. Nili Ravi
The Nili-Ravi buffalo breed is locally recognized and prized as the Panj Kalyan. This traditional name refers to its five distinct white markings on the face and legs. It represents one of the premier dairy buffalo breed...
Q3. The atmospheric stratum situated immediately adjacent to the earth's surface is termed___________________?
Show answer Hide answer
Answer: C. Troposphere
The troposphere represents the lowest layer of the entire earth atmospheric profile system. This crucial atmospheric stratum extends directly upward from the solid earth surface boundary layer. Most global weather phenom...
Q4. Ovine fleece covering a sheep's body consists of specialized biological fibers known as_________________?
Show answer Hide answer
Answer: C. Wool
Ovine fleece covering domestic sheep consists of specialized biological protein fibers known as wool. These natural fibers grow continuously from specialized follicles embedded within the animal skin layers. Wool possess...
Q5. The chemical formula representing commercial urea fertilizer is_______________________?
Show answer Hide answer
Answer: C. Both a & b
Commercial urea fertilizer is represented chemically by the standard molecular formula written as NH2CONH2. Alternative structural notation formats can also represent this same organic nitrogen compound accurately. Both...
Q6. The branch of biological science focusing on heredity and phenotypic variation is named___________________?
Show answer Hide answer
Answer: A. Genetics
Genetics is the specialized biological discipline dedicated to studying heredity and phenotypic trait variation. This field examines how biological information is passed reliably from parents to their offspring. Research...