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A low frequency recombination indicates that the genes are:
The production of gametes by the parents, the formation of zygotes, the F1 and F2 plants can be understood using:
In the assisted reproductive technology where gametes have been fertilized in vitro, which of the following is practicable for embryo transplantation in fallopian tube?
Mental retardation in man occurs due to:
Given below are two statements: Statement I: Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance. Statement II: Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower colour, pod shape and colour, flower position and stem height. In the light of the above statements, choose the correct answer from the options given below:
A common test to find the genotype of a hybrid is by:
Match the placental types Column-I with their examples Column-II.
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In honey bee population, sons do not have fathers but have grandfathers. Reason (R): Haploidy in drones of honey bee is due to parthenogenesis while fertilisation results into female bees. In the light of the above statements, choose the correct answer from the options given below:
Bicarpellary ovary with obliquely placed septum is seen in:
Identify the contraceptive methods A, B, C, D, and E from the list below (corresponding to standard NCERT diagrams): I. Tubectomy II. Vasectomy III. Implants IV. Condoms V. Copper T VI. Cervical caps
Embryo with more than 16 blastomeres formed due to in vitro fertilisation is transferred into:
MTP is practised mainly to:
Which one of the following plants shows vexillary aestivation and diadelphous stamens?
The allele for tallness is dominant over that of dwarfness. This is called:
Consider the two surgical procedures (A and B) given below and choose the correct statement:
Artificial insemination means:
Persistent nucellus in the seed is known as
The last chromosome sequenced in Human Genome project was:
In Mendel's experiments with garden peas, round seed shape (RR) was dominant over wrinkled seeds (rr), and yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
Which stage of meiosis can last for months or years in the oocytes of some vertebrates?