TLS Online TPP Program

#Question id: 11545


Growth factors are local regulators that ________.

#7. System Physiology – Animal
  1. are modified fatty acids that stimulate bone and cartilage growth
  2. are found on the surface of cancer cells and stimulate abnormal cell division
  3. bind to cell-surface receptors and stimulate growth and development of target cells
  4. convey messages between nerve cells
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TLS Online TPP Program

#Question id: 5431

#8. Inheritance Biology

Plant having height 6 cm are allowed to cross with plant having height 2 cm , all F1 progeny having height uniform 4 cm were allowed selfing to produced F2 progeny in which 3 plant out of  8 having height  4 cm . what are number of polygene involve in that trait ?

TLS Online TPP Program

#Question id: 5432

#8. Inheritance Biology

which of the following are not feature of polygenic inheritance ?

TLS Online TPP Program

#Question id: 5433

#8. Inheritance Biology

Two varieties of maize averaging 120 and 80 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 100 inches in height. If height is control by 3 pair of polygene, what is proportional of averaging phenotype in their F2 progeny?

TLS Online TPP Program

#Question id: 5434

#8. Inheritance Biology

Plant height of wild Solanum nigrum is controlled by polygene. A pure line plant with 60 cm height was cross to pure line plant having 20 cm height .All F1 plant having uniform height 40 cm. F1 plant was allowed to self-fertilization to produced 4/64 proportional of F2 plant having height 20 cm . What is number of polygene governing plant height?

TLS Online TPP Program

#Question id: 5435

#8. Inheritance Biology

A polygenic trait is controlled by three genes-A, B and C. In a cross, AaBbCc x AaBbCc, what is a probability of intermediate phenotype offspring?

TLS Online TPP Program

#Question id: 5436

#8. Inheritance Biology

Quantitative characteristics arise from two phenomena either polygenic or environmental influence on genotype. Which of the following is not character of quantitative polygenic trait?