Answer:
Option D, Number of limbs
Explanation:
Options for the question
a. Birth weight
b. Hair color
c. Number of offspring
d. Number of limbs
Solution
Variation within a species is caused due to genetic differences governed by varying allele frequencies and duet to environmental factors that somewhere effect the expression of the genetic potentials thereby causing phenotypic variation.
Number of limbs is a physical characteristics, very unlikely governed by genetic variation. While factors such as hair color (grey, black, white etc.), height (tall, short, medium) etc. are governed by genetic variation as a result of which they have several phenotypic variations.
Hence, option D is correct
Answer:
(A) Natural killer- virus-infected cell.
(C) Neutrophil - bacteria in skin lesion.
(B) Eosinophil - tapeworm in the intestines.
Explanation:
<u>Natural killer cells</u> are a type of the cytotoxic lymphocyte that are critical to the innate immune system. NK cells are the cells which provide rapid responses to the <u>virus-infected cells</u>.
<u>Neutrophils</u> are type of the phagocyte which are found in bloodstream. During beginning of the acute phase of inflammation particularly which are a result of the <u>bacterial infection</u>, neutrophils are the first-responders of the inflammatory cells to migrate towards inflammation's site.
<u>Eosinophils</u> are variety of the white blood cells which are responsible for combating <u>parasites</u> and also certain infections. Thus it will mostly target <u>tapeworm in the intestine</u>.
Answer:
one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
Explanation:
Answer:
rotation at the same time
Explanation:
Answer:
1. TEF
2.RMR
3.TEA
Explanation:
The major components that contribute to the body daily expenditure are as follows
1. TEF(Thermal effect of feeding)
2.RMR( Resting metabolic rate )
3.TEA(Thermal effect of activity)
Generally resting metabolic rate consume 60 to 75% of energy for maintenance thwe body temperature.
When body is doing this some physical work then it is called activity related expenditure.
