I think the anwser is C)
Sorry if its wrong
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Answer:
RNA contains an additional oxygen atom on the ribose sugar. (Ans. C)
Explanation:
RNA contains a sugar which is known as ribose, and which contains an extra group of hydroxyl (OH-) while DNA contains deoxyribose sugar.
RNA contains four nitrogenous bases cytosine, adenine, guanine, and uracil, while DNA contains cytosine, adenine, guanine, and thymine.
Double helix means two stranded structure like DNA, while RNA is single stranded.
DNA molecule is much longer polymer than RNA molecule.
Answer:
D. If all of the offspring are short-tailed, the unknown individual is the homozygous dominant genotype.
Explanation:
The short tail phenotype is completely dominant over the long tail phenotype. When a short tailed salamander with unknown genotype is crossed with a homozygous recessive long tailed salamander, the cross is called testcross. Lets assume that the allele "S" gives "short tail" phenotype while the allele "s" gives "long tail" phenotype.
If the "short tailed salamander" with unknown genotype is homozygous dominant (SS), the process of the testcross will express only dominant trait (cross 1). On the other hand, if the "short tailed salamander" with unknown genotype is heterozygous dominant (Ss), segregation of alleles during gamete formation would form two types of gametes (cross 2). The 50% progeny would express the "long tail" phenotype while rest 50% will express the "short tail" phenotype.
Answer:
Both binary fission and mitosis produce genetically identical daughter cells.
Explanation:
The process in which new cells are made in order to grow, replenish (repair), and reproduce is called cell division . The three main types of cell division are binary fission, mitosis, and meiosis. In prokaryotes like bacteria cell division take place through binary fission, while eukaryotes (e.g., plant and animal cells) uses two types of cell division - mitosis (the process of making new body cells like blood, muscle etc ) and meiosis (reproductive cell division that creates egg and sperm cells).
Binary fission is a simple and rapid process in which a single parent cell divides to form two genetically identical daughter cells. The main function of binary fission is reproduction.
In mitosis, a cell is replicated into exact copies of itself and duplicates all of its contents including the chromosomes and splits to form two identical daughter cells. It is a complex process in which cells pass through different phases called cell cycle during cell division.
Meiosis is a type of cell division in which four haploid cells are produced from a diploid parent cell having two copies of each chromosome, where the number of chromosomes in the parent cell is reduced to half by undergoing DNA replication and nuclear division.
Both binary fission and mitosis are types of asexual reproduction in which the DNA is copied and the cytoplasm is divided (cytokinesis) to form two genetically identical daughter cells, which contain an exact copy of the parent cell's DNA.
1,700 species of plants live on the arcitc like flowering plants , herbs , grasses,dwarf shrubs, mosses , lichens and the arctic willow ....
