biology Question Bank - Sarthaks eConnect

Match the following and choose the correct option:

(A)	Trophoblast	(i)	Embedding of blastocyst in the endometrium
(B)	Cleavage	(ii)	Group of cells that would differentiate as embryo
(C)	Inner cell mass	(iii)	Outer layer of blastocyst attached to the endometrium
(D)	Implantation	(iv)	Mitotic division of Zygote

A scion is grafted to a stock. The quality of fruits produced will be determined the genotypes of:-

Post pollination development of pollen grain is called :-

Bacterial colonies that have a foreign DNA fragment inserted in to the plasmid will appear white, beause-

If in a population, frequency of organisms of recessive trait is 25%, then calculate the frequency of recessive allele.

Select the incorrect statements :-

A. Linked genes causes absolute lethality

B. Ratio of monohybrid & dihybrid test cross are same

C. `F_2` ratio in codominance & incomplete dominance are same

D. Sex of male Drosophila is dependent on Y –chromosome

In pendigree analysis the symbol represents:-

In a medico-legal case of accidental interchange between two babies in a hospital, the baby of blood group ‘A’ could not be rightly given to a couple:-

Find out unmatched –

If not timely detected, STD’s can result in :

An antiprogesterone drug that can be use to induce MTP and act as an emergency contraceptive is :-

Match the column-I (Plants) with column-II (Pollinating agents) and select the correct option:-

Column-I	Column-II
(A) Callistemon	I Ants
(B) Zeamays	II Bats
(C) Kigelia	III Sun bird
(D) Acacia	IV Air

Name the blank space A, B, C and D given in the following table:-

Microbes name	Commercial product
A	Lactic acid
B	Cyclosporin-A
Penicillin notatum	C
D	Pectinase

Find an incorrect statement with respect to findings of HGP :-

In a population an autosomal recessive disorder is present in 60 individual out of 6000. What is the number of homozygeous normal (AA) offspring in population :-

If there are four allelic forms of the gene controlling ABO blood group then what will be the number of possible genotype?

In Antirrhinum majus when a pink flowered plant is crossed with red flowered plant then totel 120 plants are obtained, What will be percentage of phenotype in offspring :-

Which of the following are required to maintenance of Harday-Weinberg equilibrium?

Which of the following part of sperm is called ‘energy chamber’ ?

Which of the following statement is incorrect?

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