Answer:
Each species has a specific identifying number of chromosomes. For example, a cat, <em>Felis catus</em>, has 38 chromosomes, while corn, <em>Zea mays</em>, has 20 chromosomes each chromosome carries specific genes that are unique to that chromosome.
Explanation:
Chromosomes vary in shape and number among living beings. For example, the bacterial chromosome is a unique circular molecule, while human beings have 46 lineal chromosomes arranged in pairs (23 pairs). The total number of chromosomes is specific to each species, and it is denoted as the "chromosomic dotation" of the species.
Genes are the hereditable units that transmit the information needed to specify traits, from parents to offspring, generation to generation. Genes are arranged in sequence in the chromosomes. A chromosome might contain hundreds of thousands of genes.
Genes vary in size and shape. They are composed of pairs of bases, and these sequences also vary in number, producing genes of different lengths. In general, genes code for proteins. Proteins create the organism tissues and perform or carry out specific functions in the organisms, controlling almost all processes and chemical reactions.
Each chromosome carries <u>specific</u> genes that code for <u>specific </u>proteins that have <u>specific</u> functions in the organisms. Each chromosome carries information to synthesize different proteins needed to accomplish a certain function. But <u>not all chromosomes carry the same gene sequences</u>. Only homologous chromosomes carry information for the same trait, but even this information is not necessarily the same. They might have the same gene but different alleles.
Answer:
Primary succession begins with soil formation. The first stage of succession involves pioneer species. In primary succession, pioneer plants are those that can grow without soil, such as lichens. Lichens begin breaking down a rock.
The answer is osteoporosis
Osteoporosis is a condition when the bone(osteo) density is decreased, makes them look like having pore or spongy. It is found frequently in the elder woman that has been menopause for a few years.
Estrogen has a role in bone remodeling which causes a protective effect on woman before menopause.
When an animal has a feature that helps them to disguise, in this case specifically making the animal blend into the surroundings, this is called a camouflage. A camouflage is a result of a process by which, under the pressure of natural selection, a feature gets prevalent in a species in order to make this species more fitted to the environment. In this case, the penguins are safer in their environment with this feature. This process is called adaptation, and this is a camouflage adaptation.
Therefore, the correct answer is D. adaptation.
Answer:
1)There are complex linkages among emissions, concentrations, climate changes, and impacts. 2)There are significant time lags in the climate system. There are also significant time lags in human response systems. 3)Risks, judgments about risk, and adaptation needs are highly variable across different contexts.
Explanation:
