sap is translocated from areas of supply, called sources, to areas of metabolism or storage, called sinks. Which of the following statements about source and sink are TRUE?

a.) Sinks include any nonphotosynthetic organs of the plant and organs that do not produce enough photosynthetic products to support their own growth or storage needs

b.) Sources include exporting organs that are capable of producing photosynthate in excess of their own needs

c.) During the growing season of the first year, storage root is a sink, when it accumulates sugars received from the source leaves. During the second growing season the same root becomes a source

d.) Roots, tubers, developing fruits, and immature leaves, which must import carbohydrate for normal development, are all examples of sources tissues

Find the correct combination of the source and sink pattern of translocation.

#Question id: 4822

#Section 3: Genetics, Cellular and Molecular Biology

In a particular species of mammal black hair (B) is dominant to green hair (b) and red eyes (R) are dominant to white eyes (r). If a BbRr individual is mated with a bbrrindividual the expected phenotypic ratio of the offspring is 1 black-red : 1 black-white: 1 green-red : 1 green-white. However, when you mate these individuals you find that the phenotypic ratio of the offspring is 6 black-red :1 black-white : 1 green-red : 6 green-white. What could account for this difference?

#Question id: 4823

#Section 3: Genetics, Cellular and Molecular Biology

Which one of the following DNA markers can be used to distinguish between a homozygote and heterozygote ?

#Question id: 4823

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which one of the following DNA markers can be used to distinguish between a homozygote and heterozygote ?

#Question id: 4824

#Section 3: Genetics, Cellular and Molecular Biology

If plant with genotype AaBb is test cross where A and B are link at 10 map unit  in trance configuration then the probability of getting AaBB and AaBb genotype respectively?

#Question id: 4825

#Section 3: Genetics, Cellular and Molecular Biology

How many genetically different gametes can be made by an individual of genotype AaBbCcDd if gene A, B are completely link and other are unlink?

#Question id: 4827

#Section 3: Genetics, Cellular and Molecular Biology

A cross between individuals with genotypes AaBbX aabb produces the following progeny:

AaBb -  83, aaBb- 21, Aabb-   19,  aa bb -77

Which of the following statements is true?