Heredity and Variation
Heredity and Variation: Overview
This topic consists of various concepts like Heredity,Variation,Alleles, etc.
Important Questions on Heredity and Variation
Which of the following law of inheritance has not been given by Mendel:
A gamete contains
Which of the following terms represent two form of a trait on chromosomes.
Which of the following genotype pair given below do not show same expression w.r.t. seed shape and seed colour?
In maize, the trait for the purple kernel (P) is dominant over the yellow kernel (p). A plant with purple kernels is crossed with another plant with yellow kernels and produces 2 offspring with purple kernels and 2 offspring with yellow kernels. What is the genotype of the parental maize plants?
What is wrong about heredity in following statements?
How do blood groups reveal true parentage in humans?
The genotype for the height of an organism is "TT". How many alleles does it have?
What is progeny?
A comparison between the behaviour of chromosomes and genes
| A | B |
| Occurs in pairs. | Occurs in pairs. |
| Segregate at the time of gamete formation such that only one of each pair is transmitted to a gamete. | Segregate at gamete formation and only one of each pair is transmitted to a gamete. |
| Independent pairs segregate independently of each other. | One pair segregates independently of another pair |
Can you tell which of these columns A or B represent the chromosome, and which represent gene? How did you decide?
Differentiate between traits and alleles
What is allele?
A red-eyed male fruit fly is crossed with a white-eyed female fruit fly. Work out the possible genotype and phenotype F1 and F2 generation. The pattern of inheritance results in the production of offsprings (%):
Number of character of garden pea flower chosen by Mendel?
Which of the following refers to the degree by which the progeny differs from the parent?
The recessive character of Mendel was
Define the term allele.
Define the term gene
Which of the following is the source of genetic variation?
Define the term inheritance.
