* The first statement is true.
Chromatid is a DNA molecule (the nucleofilament) associated with histone proteins and non-histone proteins. A chromatide has the shape of a rod that can have different degrees of condensation depending on the times of the cell cycle or the transcription activity of the genes.
This structural unit appears as a chromosome only during cellular divisions (mitosis or meiosis). The rest of the time, all chromatids form chromatin.
Each chromosome of a cell may consist of one or two chromatids depending on its state: just after a mitosis, or after the second meiotic division, each chromosome consists of only one chromatid, the rest of the time, after DNA replication, each chromosome consists of two completely identical chromatids, connected by the centromere, thus giving the two rods the shape of an X.
* The second statement is True
In its common definition the chromosome consists of one (or more) molecule of DNA, histones and non-histone proteins, disregarding its degree of condensation.
In its most scientifically rigorous definition, a chromosome is a fully condensed structure of chromatin. In this definition, the chromosome is only present during mitosis, more precisely during the metaphase where it takes the name metaphase chromosome (it is during the metaphase that it reaches its maximum degree of condensation).
The answers is tropical dry forest, tropical savanna, and temperature grassland.
The answer is oil and natural gas. Besides as sources of energy, oil and natural gas are used in the manufacture of asphalt, various<span> chemicals, plastics, and </span>synthetic<span> materials. </span>
Explanation:
It contains chlorophyll which the plant uses for photosynthesis when there is sunlight.
Transpiration also occurs on the leaves.
Answer;
Processor
Cache memory levels are based on proximity to processor.
Explanation;
Cache memory, also called CPU memory, is a small sized high-speed static random access memory (SRAM) that a computer microprocessor can access more quickly than it can access regular random access memory (RAM).
It provides high-speed data access to a processor and stores frequently used computer programs , data and application.
