Answer:
In fission (or binary fission), a parent separates into two or more individuals of about equal size. This type of reproduction is common among single-celled organisms including bacteria, archaea, and unicellular eukaryotes, such as protists and some fungi. The single cell divides into two daughter cells.Aug 17, 2016
Explanation:
In most animals, the Diploid state of the life cycle is much larger than the Haploid state.
<h3>What is the difference of haploid and diploid?</h3>
- Diploid guides to the number of complete chromosome set present in each cell of an organism: diploid cells contain two complete sets. Haploid organisms, on the different hand, only have one complete chromosome set. Chromosome sets can be altered in meiosis, and sometimes in mitosis.
- Humans are diploid, and most of the body's cells contain 23 chromosomes couples. Human gametes (egg and sperm cells), however, contain a single set of chromosomes and are told to be haploid.
- Haploid refers to the existence of a single set of chromosomes in an organism's cells. Sexually reproducing organisms are diploid (having two sets of chromosomes, one from per parent). In humans, just the egg and sperm cells are haploid.
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The correct answer is: c. chordates are more closely related to echinoderms than to arthropods
The Closest nonchordate relatives to Chordates are Echinodermata. Hemichordates (such as acorn worms) and Echinodermata form the Ambulacraria which is the sister phylum of the Chordates.
Echinoderms and chordates are both deuterostomes, but the differences are that Echinoderm possess bilateral symmetry only as larvae, they have tube feet and their bodies are supported by calcite skeletons.
Answer: D
Explanation: If the body mass is low that means there will be higher the population size. It's the law of nature the species which have lower body mass are more in number and vice-versa. So the answer is the Delta option.
Administration of testosterone should lead to male mating behavior in an animal only if The requisite sexually dimorphic nuclei are sufficiently masculinized.
The main sex hormone and anabolic steroid in guys is testosterone. In humans, testosterone is essential for the growth of the testes and prostate, as well as for the promotion of secondary sexual traits including increased bone and muscle mass and the development of body hair. Through territorial aggression, wooing rituals, and mate-guarding behavior, high testosterone levels have been found to improve mating effort.
The preoptic area of the hypothalamus, where the sexually dimorphic nucleus -POA is situated, regulates male sexual behavior. Snake, reptile, avian, rodent, ungulate, and primate male-typical copulatory activity is reduced by large lesions in the preoptic region.
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