In this problem we will explore some of the many ways that mutations in two different genes can interact to produce different Mendelian ratios. Consider a hypothetical insect species that has red eyes. Imagine mutations in two different unlinked genes that can, in certain combinations, block the formation of red eye pigment yielding mutants with white eyes. In principle, there are two different possible arrangements for two biochemical steps responsible for the formation of red eye pigment. The two genes might act in series such that a mutation in either gene would block the formation of red pigment. Alternatively, the two genes could act in parallel such that mutations in both genes would be required to block the formation of red pigment.

Further complexity arises from the possibility that mutations in either gene that lead to a block in enzymatic activity could be either dominant or recessive. If the crosses is made between a wild type insect with red eyes and a true breeding white eyed strain with mutations in both genes. Such considerations yield the Pathways in series with recessive mutations in both genes, what will be the phenotype in F1 progeny?

#Question id: 10715

#SCPH28 | Zoology

Following table shows the presence (+) or absence (-) of five species in three communities (A, B, C):

Based on the above, which of the following is the correct order of diversity strength communities?

#Question id: 10716

#SCPH06 I Botany

The stability of a food web in a community is quantified using certain parameters which are defined below. Which of the following is an CORRECT representation?

A. Community with more complex is more stable

B. Community with more number of alternate is more stable

C. Stability of community is inversely proportional to Connectance 

D. Community with higher value of dominax index is more stable

#Question id: 10716

#SCPH28 | Zoology

The stability of a food web in a community is quantified using certain parameters which are defined below. Which of the following is an CORRECT representation?

A. Community with more complex is more stable

B. Community with more number of alternate is more stable

C. Stability of community is inversely proportional to Connectance 

D. Community with higher value of dominax index is more stable

#Question id: 10717

#SCPH06 I Botany

Following represents four different regions, each with four different sites on different-sized mountains. Which of the following statement is correct? 

a) In region ‘a’ gamma diversity (γ) is one, and alpha diversity (α) diversity is also 1

b) In region ‘b’ gamma diversity (γ) is 4, and alpha diversity (α) diversity is 1

c) In region ‘c’ gamma diversity (γ) is six, and beta diversity (β) diversity is 2

d) The gamma diversity (γ) are same in region ‘c’ and‘d’.

#Question id: 10717

#SCPH28 | Zoology

Following represents four different regions, each with four different sites on different-sized mountains. Which of the following statement is correct? 

a) In region ‘a’ gamma diversity (γ) is one, and alpha diversity (α) diversity is also 1

b) In region ‘b’ gamma diversity (γ) is 4, and alpha diversity (α) diversity is 1

c) In region ‘c’ gamma diversity (γ) is six, and beta diversity (β) diversity is 2

d) The gamma diversity (γ) are same in region ‘c’ and‘d’.

#Question id: 10718

#SCPH06 I Botany

A researcher collects data on plant species composition in two habitats (P and Q) by using 10 quadrats each in both habitats. She calculates the average a-diversity and the 13-diversity of each habitat from this data (shown below). Which of the following can be inferred about these habitats? 

A) Q has greater total diversity (γ) and more heterogeneous than P

B) Q has lower total diversity (γ) and less heterogeneous than P

C) P has lower total diversity (γ) and more heterogeneous than Q

D) P has greater total diversity (γ) and more heterogeneous than Q