Answer:
The dolphins population may diminish a little.
Explanation:
Crabs are one of the many things dolphins eat, and, as the prompt suggest, they cannot live in temperature greater than 60 degrees F. If climate change makes the temperature 62 degrees F, the crab population will all die. However, note that dolphins do not only eat crabs, as they have other food sources. However, crabs are a major population, so we can see a disruption in the food web, with there being less dolphins than usual.
~
Answer:
It means the way genes are expressed is the same in most organisms.
Explanation:
All living organisms use the same DNA or RNA as their genetic material. The manner in which the information in these genes are encoded or expressed is known as the GENETIC CODE. Genetic code comprises of all the codons that specifies amino acids in all living organisms. Only 20 amino acids in different sequential pattern makes up all proteins.
Nearly all living organisms use the same genetic code, as a codon does not specify a different amino acid in another organism. It is universal in all organisms that AUG codon specifies Methionine. Only slight differences to this pattern of genetic expression has been discovered, hence, the genetic code is said to be NEARLY UNIVERSAL.
The idea of a nearly universal genetic code refers to the common genetic 'language' shared by nearly all organisms. This means that, across an extraordinarily diverse array of species, the same sequences of DNA and RNA (the genetic code) translate to the same amino acids, which, in turn, build the same proteins. The universality of this code strongly suggests that all life shares a common origin.
The nearly universal genetic code refers to the fact that virtually all living organisms use the same codons, or sequences of DNA and RNA, to code for specific amino acids, which are the building blocks of proteins. This conservation of codons is seen across a vast array of species, with minor exceptions. For instance, if the mRNA encoding the globin protein in horses is transferred to a tulip cell, the tulip would synthesize the same protein, suggesting a common origin of all life on Earth.
The 64 possible combinations of triplet codons coding for 20 amino acids and with the occurrence of only one genetic code demonstrates the idea of degeneracy in the genetic code. This means that more than one codon can specify the same amino acid. For instance, unusual amino acids such as selenocysteine and pyrrolysine have been found in archaea and bacteria, which use unique codons.
Ultimately, the universality and degeneracy of the genetic code highlight the homologous characteristic shared by all species suggesting they share a common ancestor. This is powerful evidence for the shared biochemistry in all forms of life.
#SPJ11
(1) modification of genes in body cells
(2) modification of genes in sex cells
(3) increased reproduction among individuals
with identical chromosomes
(4) recombination of genes in cells reproducing
by mitosis
Evolution in sexually reproducing species occurs as a result of modification of genes in sex cells. Genetic variation through mutations and genetic recombination during meiosis leads to offspring that are genetically different from their parents, providing the basis for natural selection and evolution.
In a sexually reproducing species, evolution occurs as a result of modification of genes in sex cells. Sex cells, or gametes, such as sperm and eggs, carry genetic information that is passed on to offspring. Genetic variation can arise through mutations or through the process of genetic recombination during meiosis, resulting in offspring that are genetically different from their parents. This genetic variation provides the raw material for natural selection and evolution.
#SPJ12
Answer:
All invertebrates except echinoderms are protostomes. Protostomes include the phylum: coelenterata, ctenophora, platyhelminths, nematyhelminths, annelida, arthropoda and mollusca.
Explanation:
Echinoderms and chordates have tube within tube type of body plan which has evolved along deuterostomic evolutionary line. Other similarities between echinoderms and chordates (which includes vertebrates) are:
-They possess a true coelom called enterocoelom.
- They have mesodermal skeleton made of calcareous plates or ossicles.
A species in a changing environment would have the best chance of survival as a result of a mutation that has high adaptive value and occurs in its gametes. Thus, the correct option is C.
A Mutation is defined as which occurs when a deoxyribose nucleotide acid gene is damaged or altered in such a way as to change the genetic message carried by that gene.
All the mutations which affect the fitness of future generations are agents of evolution.
For more information regarding mutation, visit:
#SPJ2
a clam basically extends with the fragile outer system frame, therefore it retracts after a while, one of the main reasons we retrieve pearls from shells and clams.