Explanation:
Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein.
Answer:
hereditary only: DNA replication, anaphase I,II and metaphase II.
genetic variation only: crossing over, -metaphase 1
both: fertilization
Explanation:
hereditary only: DNA is only copied to have enough for the daughter cells.
Anaphase I, II chromosomes are moving to be inherit to daughter cells.
Metaphase II chromosomes were sorted randomly during metaphase I and will only line up to move to each daughter cell.
Genetic variation only: during crossing over chromosomes exchange information which accounts for DNA variability.
During metaphase I random assortment of chromosomes will create variability too.
Both: during fertilization the newly formed zygote contains different information from both parents (genetic variation), and this information is passed onto the next generation.
Explanation:
they beatify our environment ,with their attractive scent and and colour
Answer: Option A.
participate in innate immunity
secrete granzymes and perforin
Explanation:
Cytotoxic T (TC) cells are like natural killer (NK) cells because they both because participate in innate immunity they are components of innate immune system i.e white blood cells that fight against disease or act as defence for infections.
NK cells can recognize and destroy cells that have regulated MHC class I molecules from their cell surface. They recognise the viral pathogens and activate the receptor that bind to the target cell and it releases cytotoxic granules that contain perforin and granzymes, which leads to lysis of the target cell and then it's clear off the infection by producing antibodies.
The overall effect of that is that more carbon is stored in the atmosphere. Option A
<h3>What is the carbon cycle?</h3>
The term carbon cycle refers to the movement of carbon in nature. The carbon cycle is part of the larger biogeochemical cycle by which organisms move about in the environment.
When the step in which plants absorb carbon in the air through photosynthesis is removed from the carbon cycle, the overall effect of that is that more carbon is stored in the atmosphere. Option A
Learn more about carbon cycle:brainly.com/question/1627609
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