Families of proteins with homologous tertiary structures that have diverged from a common ancestor show amino acid sequence differences.

Families of proteins with homologous tertiary structures that have diverged from a common ancestor show amino acid sequence differences. Correct Answer True

The above statement is true. These differences are derived from two processes: the first is the selection of divergence of function between family members and the second is a consequence of neutral drift.
Bissoy MCQ

Related Questions

Read the following statements and answer with the help of given below:
(1) Two persons are said to be related to each other by full blood when they are descended from a common ancestor by the same wife.
(2) Two persons are said to be related to each other by uterine blood when they are descended from a common ancestress but by different husbands.
(3) Two persons are said to be related to each other by half blood when they are descended from a common ancestor by the same wife.
(4) Two persons are said to be related to each other by half blood when they are descended from a common ancestor but by different wives.
Consider the following statements regarding genetic code and choose the correct answer:
1. The genetic code is degenerate
2. In all amino acids the first two bases are the same in all the codons that represent a particular amino acid
3. The number of codons an amino acid can claim is proportional to the frequency of the amino acid in proteins
4. Amino acids with codons ending in U or A also have codons ending in C or G respectively
Of the 45 families in a locality, 25 families have working mothers and 10 families have retired individuals as members to look after the children at home. Of the families, 8 have both working mothers and retired individuals as members. How many of the families have working mothers but no retired individuals as members?
Sometimes, it is also possible that two sequences have derived from a common ancestor, but may have diverged to such an extent that the common ancestral relationships are not recognizable at the sequence level.
In a village, each of the 60% of families has a cow; each of the 30% of families has a buffalo and each of the 15% of families has both a cow and buffalo. In all there are 96 families in the village. How many families do not have a cow or a buffalo ?
Analysis of a hexapeptide using enzymatic cleavage reveals the following result:
• Amino acid composition of the peptide is: 2R, A, V, S, Y
• Trypsin digestion yields two fragments and the compositions are: (R, A, V) and (R, S, Y)
• Chymotrypsin digestion yields two fragments and the compositions are: (A, R, V, Y) and (R, S)
• Digestion with carboxypeptidase A yields no cleavage product.
Given: Trypsin cleaves at carboxyl side of R. Chymotrypsin cleaves at carboxyl side of Y. Carboxypeptidase A cleaves at amino side of the C-terminal amino acid (except R and K) of the peptide.
The correct amino acid sequence of the peptide is:
In a batch process, the reaction takes place in the presence of an acid medium. The acid is drained from the reaction vessel at the rate of 15ml/s as a result of the density difference of the acid from the reacting component. To avoid wastage of acid, it is recycled to an acid tank which has 1000 L capacity. The acid drained from the reaction vessel, picks up 50 g/L solids from the reactor. Acid is fed once again to the process from acid tank. When the process is started, the acid is almost pure in the tank as a result of filtration. As the reaction proceeds, acid in the tank gets more and more contaminated with the solids. The concentration of the solids should not exceed 100 g/L from the process point of view. The batch time is 16h. Estimate whether the concentration of the solids will exceed 100g/L during the batch reaction.
Two species that have recently diverged from a common ancestor might be expected to have a ________ set of genes and ________ chromosomes with these genes positioned along the chromosomes in the same order.
Species which have diverged after origin from common ancestor giving rise to new species adapted to new habitats and ways of life is called as _______
Directions : Each of the following question consists of a statement followed by two arguments I and II. You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument.

Statement : Are nuclear families better than joint families?

Arguments :
I. No. Joint families ensure security and also reduce the burden of work.
II. Yes. Nuclear families ensure greater freedom.