Answer:
antigen-MHC protein complexes
Explanation:
Helper T-cells recognise antigens that are complexed with MHC proteins and interact with target cells. Antibodies can be produced against a single antigen in a variety of ways. Toxic shock syndrome is a relatively mild condition that resembles other minor allergy responses. Antigen-presenting cells break down superantigens.
(Hope this helps can i pls have brainlist (crown)☺️)
The second choice I think would be right because the picture is of a vaccine
Answer:
The map distance between sn and ct is = 25 m.u or map unit.
Explanation:
Given, sn ct+ × sn+ ct
In F1 generation the progenies were interbred.
In F2 generation,
sn ct = 13 (recombinant)
sn ct+ = 36 (parental)
sn+ ct = 39 (parental)
sn+ ct+ = 12 (recombinant)
<em>Linkage Map distance = (no. of Recombinant progeny/total progeny) </em>
<em> × 100 </em>
<em>Recombination frequency = (no. of Recombinant progeny/total progeny) </em>
<em> × 100</em>
= ( 13+ 12) /100 × 100 m.u
= 25/100 × 100
= 25 %
∴ The distance between sn and ct = 25 m.u or map unit
∴ Linkage happened between sn and ct as the map distance is much less than 50
Invasive species are not native to the new ecosystem that they are invading therefore they have the upper hand. These species have different adaptations that help them spread faster than the other stable organisms in the environment. Once the invasive species starts to spread its almost impossible to stop due to its quick growing and competitive nature
