Animal Breeding

Q.

What is the difference between outbreeding and outcrossing?

Q. Which of the following is not an economic significance of honey bees?

1. Production of honey
2. Production of beeswax
3. Production of lac
4. Cross-pollination in angiosperms

Q. Fill in the blanks:
(a) Humans reproduce _____________ (asexually/sexually)
(b) Humans are _____________ (oviparous, viviparous, ovoviviparous)
(c) Fertilisation is _____________ in humans (external/internal) (d) Male and female gametes are _____________ (diploid/haploid)
(e) Zygote is _____________ (diploid/haploid)
(f) The process of release of ovum from a mature follicle is called _____________
(g) Ovulation is induced by a hormone called _____________
(h) The fusion of male and female gametes is called _____________
(i) Fertilisation takes place in _____________
(j) Zygote divides to form _____________which is implanted in uterus.
(k) The structure which provides vascular connection between foetus and uterus is called _____________

Q.

What is meant by the term 'breed'? What are the objectives of animal breeding?

Q. A polyoestrous mammalian example is:

1. Man
2. Cat
3. New age monkey
4. All the above

Q.

The poultry eggs we usually take...are they fertilised or unfertilized?

Q. Which one of the following statements is/are not correct?

1. In menstrual cycle, periodic sloughing off of inner lining of womb occurs.
2. Monkeys, apes and humans show menstrual cycle.
3. The urge for sex is highly suppressed during the oestrous phase.
4. Oestruous cycle occurs in non-primates such as cows.

Q.

Read the following statements (1-4) and identify which of the following statements are not true about animal breeding?

1. It involves both mating of animals followed by the selection of the superior offspring.

2. It involves only the selection of individuals for mating but not the selection of offspring.

3. Mating can be between animals of the same species or different species.

4. The purpose of animal breeding is to obtain animals with increased yield but shorter productive life.

1. 2 and 4
2. 1, 3 and 4
3. 2 and 3
4. 1 and 4

Q. Write the name of one indigenous and one exotic breed of poultry birds.

Q.

Does all placental mammals have menstrual cycle?

Q. Which of the following statements about the Hershey- Chase experiment are incorrect?
I: Bacteria infected with bacteriophage radiolabeled with ${}^{35}P$ were radioactive
II: Bacteria infected with bacteriophage radiolabeled with ${}^{35}S$ were radioactive
III: Bacteria infected with bacteriophage radiolabeled with ${}^{32}P$ were radioactive
IV: Bacteria infected with bacteriophage radiolabeled with ${}^{35}P$ and ${}^{32}S$ were radioactive
V: Bacteria infected with bacteriophage radiolabeled with ${}^{35}P$ were not radioactive

1. Statements I, II, III are incorrect.
2. Statements I, II, V are incorrect
3. Statements I, II, IV are incorrect
4. Statements II, III, IV are incorrect

Q. A female animal under observation shows 'heat' for around 30 hours every 16-17 days during the fall months with little or no discharge from her uterus. Based on this information, this animal shows ___________.

1. Non-seasonal polyoestrous cycle
2. Seasonal polyoestrous cycle
3. Monoestrous cycle
4. Menstrual cycle

Q. Alfred Hershey and Martha chase used radioactive isotopes to label DNA and proteins of bacteriophage. These radioisotopes were respectively __________.

1. $P^{32}and{S}^{35}$
2. $S^{35}and{P}^{32}$
3. $S^{35}and{P}^{35}$
4. $P^{35}and{S}^{32}$

Q. IUT technique is employed to achieve which of the following?

1. Transfer of embryo into the uterus
2. Transfer of egg into the uterus
3. Transfer of the sperms into the uterus
4. Transfer of sperm directly into the oocyte

Q. How can the characteristics of a hybrid plant be preserved in future generations?

1. By sexual reproduction
2. By employing the mechanism of apomixis
3. By inducing parthenocarpy in the hybrid plant
4. Both a and b

Q. How many of the following statements are incorrect?
I. The enzyme DNA ligase is used to join DNA fragments.
II. The plasmid used to create the first recombinant DNA was isolated from Escherichia coli.
III. Asexual reproduction preserves the genetic information while sexual reproduction permits variation.
IV. The term biotechnology was coined by Stanley Cohen.

1. 1
2. 2
3. 3
4. 4

Q. What was the finding of Hershey and Chase?

1. The viral infecting agent is RNA.
2. The viral infecting agent is DNA.
3. The viral infecting agent is protein.
4. The $T_2$ virus has RNA as its genetic material.

Q. IUI, associated with infertility, stands for -

1. Intra Uterine Insemination
2. Inter Uterine Insemination
3. Intra Uterine Injection
4. Intra Uterine Invagination

Q. Assertion: Cattle breeds can be improved by superovulation and embryo transplantation.

Reason: Superovulation in high milk-yielding cows induced by hormonal injection followed by embryo transplantation in surrogate mothers increases high yielding animals in the herd.

1. Both assertion and reason are false
2. Both assertion and reason are true and the reason is the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are true and the reason is not the correct explanation of the assertion

Q. Which one of the following products of apiculture is used in cosmetics and polishes?

1. Honey
2. Oil
3. Beeswax
4. Royal jelly

Q. Which of the following correctly defines a transgenic animal?

1. An animal which has foreign DNA and RNA in some of its cells because of an injection of DNA and RNA into the nucleus of the zygote from which it is developed
2. An animal which has foreign DNA in all its cells because of an injection of DNA into the nucleus of the zygote from which it is developed
3. An animal that has foreign DNA in some of its cells because of an injection of DNA into the nuclei of some of the cells of the blastocyst
4. An animal which has foreign DNA in all its cells because of an injection of DNA into the nuclei of some of the cells in adulthood

Q.

Which of the following poultry bird lays maximum number of eggs annually?

1. ILS-82

2. B-77

3. HH-260

4. IBL-80

Q. Choose the correct statement about animal breeding.

1. Leads to increased production of animal products
2. Gives rise to superior progeny
3. Selection of desirable traits in animals
4. All of the above

Q. Boyer performed studies on restriction enzymes from which of the following bacteria?

1. Salmonella typhimurium
2. Thermus aquaticus
3. Escherichia coli
4. Agrobacterium tumefaciens

Q. When two parents of opposite sex participate in the reproductive process involving fusion of male and female gametes, it is called

1. Sexual reproduction
2. Asexual reproduction
3. Vegetative reproduction
4. Parasexual reproduction

Q. Read the following statements (i-iii) and identify which of the following statements are incorrect regarding animal breeding?

i. It involves mating of animals followed by the selection of the superior offspring.
ii. Mating can be between animals of the same species or different species.
iii. The purpose of animal breeding is to obtain animals with increased yield but shorter productive life.

1. Only iii
2. i, ii and iii
3. ii and iii
4. Only i

Q. Among the progenies born from the mating of a white and an Andalusian (blue) fowl, there are 15 white chickens. What is the expected total number of progeny?

1. 30
2. 15
3. 45
4. 60

Q.

Name two milch breeds of cow.

Q. Which of the following characteristics make mice one of the best transgenic models?
I) Mice genome has been studied extensively
II) Their genome is similar to that of humans
III) They have long reproductive cycle like humans
IV) They are smaller in size

1. I, II only
2. I, II and III
3. II, III and IV
4. I, II and IV

Q. Read the following statements (i-iv) and select the option which correctly identifies true (T) and false (F) statements.

i. Higher yield of milk is the only goal of animal breeding
ii. In one of the out-breeding approaches, animals of two different species are allowed to mate
iii. Mule is an example of interspecific hybridisation
iv. Due to continued inbreeding, fertility of offspring gradually increases.

1. i - T, ii - F, iii - F, iv - F
2. i - F, ii - F, iii - T, iv - T
3. i - T, ii - T, iii - T, iv - F
4. i - F, ii - T, iii - T, iv - F