The term 'Genetics' was proposed by
Mendel
Bateson
Morgan
Johanssen
Lack of independent assortment of two genes 'A' and 'B' in fruit fly - Drosophila is due to
repulsion
recombination
linkage
crossing over
Inheritance of 'ABO' blood group shows
polyploidy
incomplete dominance
multiple allelism
polygeny
Alleles are
alternate forms of a gene
homologous chromosome
pair of sex chromosome
none of the above
Multiple phenotype seen in
pleiotropy
polygenic inheritance
Mendel's principle of segregation means that the germ cells always receive
one pair of alleles
one quarter of the genes
one of the paired alleles
any pair of alleles
If two pea plants having red (dominant) coloured flowers with unknown genotypes are crossed, 75% of the flowers are red and 25% are white. The genotypic constitution of the parents having red coloured flowers will be.
both homozygous
one homozygous and other heterozygous
both heterozygous
both hemizygous
When a cross is conducted between black feathered hen and a white feathered cock,blue feathered fowls are formed. When these fowls are allowed for interbreeding, in F2 - generations, there are 20 blue fowls. What would be the number of black and white fowls?
Black 20, white 10
Black 20, white 20
Black 10, white 10
Black 10, white 20
Inheritance of flower colour is an example of incomplete dominance, which is seen in
Antrirrhinum
Pisum
Solanum
Hibiscus
Genotypic and phenotypic ratio in monohybrid cross remains same in case of
sex linked genes
pseudoallelic genes
intermediate inheritance
dominant and recessive genes