Home
Class 12
BIOLOGY
Fill up the blanks in the following para...

Fill up the blanks in the following paragraph by selecting the correct option.
Inbreeding increase `ul(i)`. This inbreeding is necessary if we want to evolve a `ul(ii)` in any animal. Inbreeding exposes harmful `ul(iii)` genes that are eliminated by selection.

A

(i) heterozygosity, (ii) puer line, (iii) dominant

B

(i) heterozygosity, (ii) breed, (iii) recessive

C

(i) homozygosity, (ii) puer line, (iii) recessive

D

(i) homozygosity, (ii) breed, (iii) dominant

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

Fill up the blanks in the following paragraph by selecting the correct option. During copulation (coitus) semen is released by the penis into the vagina and is called (i)._____.the ovum released by the ovary is transported to the (ii)._____where (iii).______takes place during fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of (iv)._____The secretions of the (v)._____help the sperm enter into the cytoplasm of the ovum.

Fill up the blanks in the following paragraph by selecting the correct option. overset((i))"____" are the primary female sex organs that produce overset((ii))"____" and overset((iii))"____" . Each primary sex organ is about overset((iv))"____" in length and is connected to the pelvic wall and uterus by overset((v))"____"

Fill up the blanks in the following paragraph by selecting the correct option A. overset("i")("___") methods work on the principle of avoiding chances of ovum and sperms meeting B. overset("ii")("___") is one such method in which the couples avoid coitus from day 10 to 17 of the menstrual cycle C. overset("iii")("___") is another method in which the male partner withdraws his penis from the vagina just before ejaculation so as to avoid insemination D. overset("iv")("___") method is based on the fact that ovulation and therefore the cycle do not occur during the period of intense loctation following parturition.

Fill in the blanks in the following statements by selecting the correct option. (i) All hybrids of poultry are produced by ______ inbred stocks. (ii) Super hybrids are obtained when genetically______ parents are used in the cross. (iii) A_______ is produced from a cross between female horse (mare) and male donkey.

The given flow chart depicts the steps to transfer a desirable gene of interest into a plant. Identify the missing steps (A,B and C) with regard ot following statements and select the correct option. (i) Joining of desirable gene to a suitable cloning vector using ligases to create a recombinant DNA molecule. (ii) Selection of transformed cells. (iii) Transferring the recombinant DNA molecules to teh target cells.

Study the following statements regarding inbreeding and select the incorrect ones. (i) The inbreeding strategies allow the desirable qualities of two different breeds to be combined. (ii) It increases homozygosity. (iii) It also helps in elimination of less desirable genes. (iv) Continued inbreeding increases fertility and productivity.

Fill up the blanks by selecting the correct option. (i) Biogas is a mixture of gases which predominantly contains______and is used as_______ (ii) Methanogens are commonly found in the__________during sewage treatment. (iii) ___________species are free-living fungi and effective biocontrol agents of several plant pathogens.

Read the following statements regarding spleen and select the correct option. (i) Spleen is a large oval-shaped organ which mainly contains lymphocytes and phagocytes. (ii) Spleen is a large reservoir of erythrocytes. (iii) Spleen is a primary lymphoid organ. (iv) spleen acts as a filter of the blood by trapping blood-borne microorganisms.

Study the following statements and select the correct option. (i) Tapetum nourishes the developing pollen grains. (ii) Hilum represents the junction between ovule and funicle. (iii) In aquatic plants such as water hyacinth and waterlily, pollination occurs by water. (iv) The primary endosperm nucleus is triploid.

Read the following statements and select the correct ones. (i) Increase in mass and increase in number of individuals are twin characteristics of growth. (ii) Metabolic reactions can be demonstrated outside the body in isolated cell-free systems. (iii) 'Response to stimuli' is a defining property of living organisms.