CBSE · Biology
Principles of Inheritance and Variation
255 practice questions for CBSE — 141 easy · 102 medium · 12 hard. Every question is graded instantly with a step-by-step solution when you miss it.
Start free practice →Sample questions
MCQ
Identify the chromosomal aberration from the given diagram
MCQ
A man, homozygous dominant for widows peak (WW), marries a woman with straight hairline homozygous recessive (ww). How many of their off springs will inherit straight hair line?
MCQ
A cross between two plants resulted in the formation of tall and dwarf offsprings in the ratio of 3:1. The genotypes of their parents will be __________?
MCQ
Extra copy of 21st chromosome causes _________ in human.
MCQ
Which one of the following is NOT an example of complete sex linkage ?
MCQ
Which one of the following crosses will have all the offsprings with recessive phenotype in the F$_2$ generation?
MCQ
Which one of the following disorder shows symptoms of excess of phenylalanine in urine of humans?
MCQ
In sickle cell anemia, the carrier (heterozygous) individuals can be identified by the microscopic examination of ____ cells.
MCQ
In a monohybrid cross between pure tall pea plant with pure dwarf pea plant, how many types of genotypes are found in the $F_2$ generation ?
MCQ
Linkage of genes in plants was discovered by -----------------.
MCQ
With respect to a specific genus and its species, a monohybrid cross is a cross between________.
MCQ
How many pair/s of contrasting characters in the pod of pea were considered by Mendel in his experiments?