In meiosis, the chromosome or chromosomes duplicate (during interphase) and homologous chromosomes exchange genetic information (chromosomal crossover) during the first division, called meiosis I. The daughter cells divide again in meiosis II, splitting up sister chromatids to form haploid gametes.
Answer:
In addition to vocalization, a mother sea lion locate her pup using a variety of behavioral signals such as moving inside their colony, returning to a familiar location within the colony where she frequented to feed her pup, visual cues and olfactory cues like smelling the approaching pups.
Explanation:
Sea Lions belong to the scientific order Pinnipedia and the family Otariidae. They can walk on all fours on land by rotating their pelvic girdle under their body and also use their front flippers to move in the water. During their breeding and pupping (birthing) time, they gather in groups called rookeries. They can communicate through vocalizations (barks, growls, and grunts) both on land and in water.
After the return of mother sea lions to the rookery from their searching for food (foraging), the mother-pup pairs identify and locate each other through the exchange of vocalizations. In addition to vocalization, the mothers often return to a home spot (familiar location within their colony where a female frequented to feed her pup), move inside the colony and also use visual and olfactory cues like smelling the approaching pups to correctly identify their pup. Also, the return of the mother to a familiar home spot provides the pup with spatial and geographical memory cues.
A.) organisms within a population must have some genetic variation.
B.) there must be more male organisms than female organisms.
C.) all of the organisms within a population must be exactly the same.
D.) one population must become extinct so another can be created.
A. organisms within a population must have some genetic variation.
When species overproduce offspring, it can lead to competition for resources and negative impacts on the environment and survival rates.
When species overproduce offspring, it can lead to competition for resources such as food, water, and shelter. This competition can result in a decrease in the overall fitness and survival rates of the offspring. Additionally, overpopulation can put pressure on the environment and lead to negative impacts such as habitat destruction and increased spread of diseases.
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B. Viruses are not living.
C. Viruses have organelles.
D. Viruses can reproduce by themselves.
B. Viruses are not living.
A virus is nothing more than a packet of genetic material that does not display the characteristics of living organisms.
Viruses are not living and they do not have organelles or produce their own energy.
The correct statement regarding viruses is B. Viruses are not living.
Viruses are considered non-living because they lack the necessary characteristics to be classified as living organisms. While they can infect and replicate within a host cell, they are unable to carry out essential life processes on their own.
Unlike cells, viruses do not have organelles and cannot produce their own energy. They are composed of genetic material surrounded by a protein coat, and they rely on host cells to replicate.
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