
Identify the behavior of genes among the following.
A) Segregate at gamete formation, only one of each pair is transmitted to a gamete
B) Independent pairs segregate independently
C) Genes will not be modified at any time
D) Starch synthesis in pea seeds is not controlled by one gene


Important Questions on Principles of Inheritance and Variation
In which of the organism, the following type of sex determination is possible



Match the following
List - I | List - II | ||
(a) | Holandric genes | (i) | Pleiotropy |
(b) | Multiple effects of a single gene | (ii) | Hypertrichosis |
(c) | Skin colour in man | (iii) | Multiple Alleles |
(d) | Blood types | (iv) | Polygenic inheritance |
The correct answer is

Assertion (A) : If the allele produces a less functional enzyme or non-functional enzyme the phenotype may be affected.
Reason (R) : The phenotype trait will not be dependent on the functioning of the unmodified allele.
The correct option among the following is:

Choose the correct statements for co-dominance and incomplete dominance respectively from the following.
(i) Codominance
(ii) In complete dominance
(A) generation did not resemble either of the two parents.
(B) In generation new traits other than parents will be expressed.
(C) In generation, the progeny resembles both parents equally.
(D) generation will show a 3:1 ratio.

Statement I : All the three types of allosomal genes - linked, linked and linked are present only in male human being.
Statement II : Only linked and not linked genes are present in female human being.
The correct option among the following is

Statement (S): The heterozygous individuals for sickle-cell anaemia express disease phenotype and also carriers of the disease.
Reason (R): genotype individuals are resistant to severe effects of malaria.
The correct answer is
