Answer: Immune system
Explanation:
Lymphocytes are a class of white blood cells (leukocytes) involved in immune response when activated by the a foreign molecule (an antigen). B lymphocytes develop in the bone marrow of mammals and are responsible for the production of circulating antibodies.
Thus, lymphocytes are associated with the immune system.
Answer:
The correct answer is option A.
Explanation:
The plates used in the skin microbiology experiment incubated at 37-degree celsius due to the microbes grow best at human body temperature which is 37-degree celsius. these bacteria are mesophiles.
The skin microbiology experiments requires conditions as the human skin to perform and study the living and healthy bacteria and some cases fungi.
Thus, the correct answer is option A.
Explanation:
Phytoplankton, Zooplankton, Small Fish, Mammal
Phytoplanktons are the small photosynthetic organism that can produce their own feed and so are the producers in this food chain. Zooplanktons are small organisms incapable of producing their own food and eat phytoplanktons. Small fishes consume zooplanktons since due to their small size they are unable to eat bigger organisms. Mammals eat small fishes since they are omnivorer.
Red-green color blindness is due to a mutant gene in the X chromosome. An XX female with normal color vision and an XY male with normal color vision have a child with karyotype XXY who is color blind. The likely explanation is that the:_--------.
father was heterozygous for the color-blindness mutation.
mother was heterozygous for the color-blind mutation.
father had CNV of the color-blind mutation.
mother had CNV of the color-blind mutation.
None of the other answer options is correct.
Answer:
mother was heterozygous for the color-blind mutation.
Explanation:
Colorblindness is a recessive disorder. This means that it is expressed only in homozygous genotypes. The responsible gene is present on the X chromosomes. A colorblind female would have the genotype X^cX^c where c is the recessive allele of the gene present on the X chromosome responsible for color blindness. A female with genotype X^cX would have normal visible but would serve as a carrier.
Both the female and the male have normal genotype. Since they had a colorblind child, it means that the female was a heterozygous carrier for the trait and imparted the responsible allele to the child. The male can not serve as a carrier for X linked recessive disorder since they have only one copy of the X chromosome. Therefore, the female was a heterozygous carrier.
