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TLS Online TPP Program

#Question id: 7296

some of the following statements regarding to this experiment are given below. Which of the following statements is incorrect?

#Unit 5. Developmental Biology

  1. If a small piece of tissue from a plant stem or leaf is placed on a solid agar medium containing the appropriate nutrients and growth hormones, the cells will start to divide to form a disorganized mass of cells known as a callus.

  2. If a small piece of tissue from a plant stem or leaf is placed on a solid agar medium, it does not need any nutrients and growth hormones, the cells will start to divide to form a disorganized mass of cells known as a callus.
  3. The callus cells are then separated and grown in liquid culture, again containing the appropriate growth hormones

  4. In suspension culture, some of the callus cells divide to form small cell clusters. These cell clusters can resemble the globular stage of a dicotyledon embryo, and with further culture on solid medium, develop through the heart shaped and later stages to regenerate a complete new plant.

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TLS Online TPP Program

#Question id: 4785

#Unit 8. Inheritance Biology

One form of white eye is a recessive X-linked gene in Drosophila. From a mating of a heterozygous wild-type Drosophila female with a white-eyed male, what is the probability of wild type offspring?
TLS Online TPP Program

#Question id: 4786

#Unit 8. Inheritance Biology

Following biochemical pathway for agouti phenotype in mice is control by gene A and B. when cross between AAbb xaaBB, what will be phenotype ratio in F2 generation? 
TLS Online TPP Program

#Question id: 4787

#Unit 8. Inheritance Biology

In humans, PKU (phenylketonuria) is a recessive disease caused by enzyme inefficiency at step A in the following simplified reaction sequence, and AKU (alkaptonuria) is a recessive disease due to enzyme inefficiency in one of the steps summarized as step B here:A person with PKU and homozygous for normal of other character was married a person with AKU and homozygous for normal of other character. What is expected phenotypes in their children?
TLS Online TPP Program

#Question id: 4788

#Unit 8. Inheritance Biology

The wild-type (W) Abraxas moth has large spots on its wings, but the lacticolor (L) form of this species has very small spots. Crosses were made between strains differing in this character, with the following results:

 What are correct conclude from genetic explanation of the results in these two crosses

a. female are heterogametic but male are homogametic for sex chromosome

b. female are homogametic but male are heterogametic for sex chromosome

c.Trait  for spot shape linked with sex chromosome

d. Trait  for spot shape linked with autosome chromosome

e. Gene  for spot shape  present on  mitochondrial genome
TLS Online TPP Program

#Question id: 4789

#Unit 8. Inheritance Biology

Red flower in plant mediated by three non-allelic genes as a follows Homozygous for mutant allele a ,b,c at any locus give white flower. A plant with Genotype Aabbcc is cross with genotype aaBbCc Plant. What is proportional of white flower among their offspring?
TLS Online TPP Program

#Question id: 4790

#Unit 8. Inheritance Biology

The F2 genotypes of two independently assorting gene A and B with complete dominance result in a 9 : 3 : 3 : 1 ratio of phenotypes if there is no interaction between the genes. Following modify phenotypic ratio of 9:3:3:1 given as following table (p - phenotype) Which of the following correct matching of gene interaction and their deviated phenotype ratio?