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Ostrovityanka [42]
2 years ago
12

Natural killer (NK) cells ________. A) are also called cytotoxic T cells B) are a type of phagocyte C) are cells of the adaptive

immune system D) can kill cancer cells before the immune system is activated
Biology
1 answer:
mariarad [96]2 years ago
3 0

Natural killer (NK) cells are also called cytotoxic T cells (Option A).

<h3>What are NK cells?</h3>

The NK (Natural killer) cells are cytotoxic lymphocytes that trigger responses from the innate immune system.

Natural killer cells are one of the most important types of lymphocytes (white blood cells) in human cells.

These cells have cytotoxic properties because they produce cytotoxic granules and different cytokines.

Learn more about NK cells here:

brainly.com/question/14308447

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Complete question:

A researcher had 15 pure-bred wild mice which were brown and all were females. They were all  mated with a male called Bob. All the offspring were brown. These were then crossed among  themselves with the following results: 293 brown and 115 white.

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Use the Punnett square to work out your answers

Answer:

(i). Determine the color of Bob. BOB IS WHITE

(ii). Determine which color is dominant. BROWN IS DOMINANT

(iii). Work out the ratio of brown to white in the ‘grandchildren.’      

     PHENOTYPIC RATIO BROWN TO WHITE 3:1

(iv). If the researcher crosses two of the white 'grandchildren', determine the color of their  offspring. THE WHOLE PROGENY WILL BE WHITE

Explanation:

Due to technical problems, you will find the complete question, answer, and explanation in the attached files.

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