Answer:
size and amount of yolk
Explanation:
The main difference between the eggs of a frog, bird and mammals is their size. The size of frog egg is small as compared to bird and mammals. Egg laying mammals have bigger egg . The similarities between eggs of frog, bird and egg laying mammals is the high amount of yolk in the egg which is used as a source of food by the embryo that is present inside the egg during the developmental stages.
Answer:
Please find the explanation below.
Explanation:
Changes in the genetic sequence of a DNA is called MUTATION. A gene is a segment of the DNA that holds information for the synthesis of proteins, which are responsible for the observable traits in organisms. The expression of a gene brings about the synthesis of a protein that effects a particular trait in an organism. The gene is expressed in two major stages viz: transcription and translation.
Transcription involves production of an mRNA molecule using the encoded information in the genes of a DNA while translation is the synthesis of a protein using the mRNA as a template.
Since, the order of the sequence in a gene determines the order of the sequence in the mRNA which ultimately determines the order of sequence in the protein, a change in the gene of an organism will affect the observed trait of that organism.
More detailedly, a change in the gene will cause a change in the mRNA sequence during transcription. A change in the mRNA sequence will cause a change in the amino acid sequence during translation. A change in the amino acid sequence will affect the protein produced i.e. might not be functional or may not be produced at all. An affected protein will cause a trait in that organism to be affected.
This is also a plant division, which is made of of three different 'families. These are woody plants, that have been grounded by gymnosperms. These are also known as gnetophytes. There are more than 70 specifies, across three 'families'- the Gnetum, Welwitschia and Ephedra. These only date back to the early Crustacean period (between 145-66 million years ago). The species are found globally, however, mostly in South America and Africa.
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