Natural killer cells are identify as a intracellular infection,especially from viruses, by the altered expression of major histocompatibility class (MHC) I molecule on the surface of infected cells.
Theses cells is a type of white blood cells. They are also called as natural killer . A blood stem cells goes through several stages to became a red blood cells, platelets, or white blood cells.
These Natural killer cells are innate immune cells which shows strong cytologist function against physiologically stressed cells such as tumor and virus infected cells.They are first line of defense against tumor and diverse range of pathogens. Work as a primary defect in human body.
To learn more about white blood cells. here
brainly.com/question/17890844
#SPJ4
Answer:
read explanation
Explanation:
This makes sense because this portion of the endoplasmic reticulum builds lipids, or fats, rather than proteins, and thus doesn't need ribosomes. These lipids may include fatty acids, phospholipids and cholesterol molecules. if incorrect dont hate on me please
Answer:
Chromosomes are the structures found in the nucleus of a cell. They are made from DNA, containing hereditary information in the form of genes that control how an organism will look and behave.
Chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring.
Explanation:
Chromosomes are the structures found in the nucleus of a cell. They are made from DNA, containing hereditary information in the form of genes that control how an organism will look and behave. - this is true. Prior to cell division, DNA molecules are organized into large structures called chromosomes. Specific regions of a DNA molecule are called genes. These dictate specific proteins which control our traits.
Genes contain thousands of chromosomes that carry specific information about building proteins for a particular trait. - this is false - genes are segments of DNA that control specific traits by dictating the structure and functions of proteins. Chromosomes contain thousands of genes
Chromosomes are small sections of DNA that contain specific information about a trait to build proteins that people inherit. The thousands of different chromosomes passed from the parents allow for humans to look uniquely different.
- this is false - chromosomes are large structures, genes are the relatively small sections of DNA. Humans have 23 pairs of chromosomes, not thousands.
Chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring. - this is true. In diploid organisms, like humans, have two copies of each chromosome. These chromosomes contain slightly different versions of genes, which make us unique.
Answer:
D
Explanation:
This involves a dihybrid inheritance I.e. two genes are being passed on. During meiosis, specifically, the Prophase stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) line side by side. According to the question, one chromosome contains A and B alleles and its homologue, received by the other parent carries a and b alleles. This means that the diploid individual has a genotype AaBb for that gene.
According to Mendel's law of independent assortment, the alleles separate independently of one another into gametes. I.e. allele A and a separates into the gametes without affecting alleles B and b of the other gene.
Crossing-over, which is the exchange of chromosomal segment occurs between the two homologues. Hence, the exchange of chromosomal segments containing alleles in the individual will possibly produce four gametes with the genotypes: AB, Ab, aB, ab.
Answer:
d
Explanation:
the others are actual evidence found at the scene
