Option B, third nucleotide position
It is told that this protein is conserved and shows similar functions in different organisms. Although it shows variation at a place in the organism. It is possible only when difference present at third nucleotide base. This lead to wobbling ( different codon code for similar amino acid, difference is present at 3 rd base of codon ) and the codon still cide for same amino acid. In this case although variation us present but still it code for similar protein.
See Hint Several organisms have a homologous protein inherited from a common ancestor) that is highly...
Chapter 15: 1. What is the significance of the fact that many synonymous codons differ in the third nucleotide position? 2. Define the following terms as they apply to the genetic code: a. Reading frame b. Overlapping code C. Nonoverlapping code d. Initiation codon e. Termination codon f. Sense codon 8. Nonsense codon h. Universal code i. Nonuniversal code 3. What role do the initiation factors play in protein synthesis? 4. Compare and contrast the process of protein synthesis in...
Consider an important protein like beta-galactosidase, which breaks down lactose. Many bacterial species have beta-galactosidase. But that doesn't mean that the amino acid sequence of beta- galactosidase in all those bacterial species is exactly the same. Far from it. As bacteria diversified into different species over evolutionary time, beta-galactosidase encoded in the genomes of the bacteria also diversified. However, we can assume that even though beta-galactosidase diversified, it was under pressure to maintain structure and function, because the reaction it...
INTRODUCTION
New mutations that arise on the X chromosome can have different
likelihoods of becoming fixed in the population than their
autosomal counterparts. This differential likelihood arises because
the effect of a recessive mutation on an autosome is only expressed
in homozygotes, whereas the effect of a similar recessive mutation
that arises on the X chromosome in a male is fully expressed. Thus,
advantageous recessive mutations are more likely to become fixed if
they are on the X chromosome than...
and w Two-dimensional gel electrophoresis separates proteins based on a. shape; charge Ob.size; concentration c. concentration; shape O d. size, charge O e. size; shape Refer to the table. Several strains of a bacterium are sequenced to investigate the pan and core genomes. In the table, + denotes presence of the gene and denotes its absence. Gene Gene Gene Gene Gene Strain ! Strain 2 + Strain 3 + Strain 4 + + + + Strain 5 + + What...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving rise to a “hairless” phenotype. In the homozygous condition, H is lethal. An independently assorting dominant allele S has no effect on bristle number except in the presence of H, in which case a single dose of S suppresses the hairless phenotype, thus restoring the "hairy" phenotype. However, S also is lethal in the homozygous (S/S) condition. What ratio of hairy to hairless flies...
need help with this ..
From the pages 571-587 attached below.
1a) Suppose a population of guppies was infected with a
parasite. In that population a mutation results in a parasite
resistant genotype that spreads through the population through
natural selection. A subsequent mutation in the parasite results in
a genotype that is unaffected by the newly evolved resistant guppy
genotype. What is the name of the hypothesis that explains this
host parasite “arms race”.?
1b) What is this name...