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#Question id: 1998


Jenner successfully used cowpox virus as a vaccine against the virus that causes smallpox. Why was he successful even though he used viruses of different kinds?

#Section 2: General Biology
  1. The immune system responds nonspecifically to antigens.

  2. The cowpox virus made antibodies in response to the presence of smallpox.

  3. Cowpox and smallpox are antibodies with similar immunizing properties.

  4. There are some antigenic determinants common to both pox viruses.

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TLS Online TPP Program

#Question id: 3541

#Section 3: Genetics, Cellular and Molecular Biology

Blue follower is dominant over white flower and long pollen is dominant over short pollen. A plant with Blue flower and short pollen was cross with white flower and long pollen. All F1 offspring display blue flower and long pollen. What is the percent of F2 progeny showing blue flower and long pollen?

TLS Online TPP Program

#Question id: 3542

#Section 3: Genetics, Cellular and Molecular Biology

All genes are not linked. The probability of a progeny being AaBBccDd from a corss between AABbccDd and aaBBccDD parents will be

TLS Online TPP Program

#Question id: 3543

#Section 3: Genetics, Cellular and Molecular Biology

Mendel crossed round and tall pea plants (RRTT) with wrinkle and dwarf ones (rrtt). The F1 plants were all round tall. These F1 plants were cross with rrTt. Which of the following is correct among these offspring?

TLS Online TPP Program

#Question id: 3544

#Section 3: Genetics, Cellular and Molecular Biology

Diploid organism possesses two alternative form of gene present on locus of chromosome that specifies particular character undergoes crossing over between gene and centromere. Which of the following observation is correct?

TLS Online TPP Program

#Question id: 3545

#Section 3: Genetics, Cellular and Molecular Biology

Consider the accompanying pedigree of a rare autosomal recessive disease, PKU. Male with PKU marry with normal female whose father is PKU. What is probability of child affected with PKU?

TLS Online TPP Program

#Question id: 3546

#Section 3: Genetics, Cellular and Molecular Biology

What is the probability of getting three children with same sex from parents?