Answer:
TRUE
Stromal cells provide a microenvironment conducive to the growth of immature B cells. Immature B cells which readily bind to them will most likely continue to mature and exit the bone marrow into a secondary lymphoid organ where they will complete development.
Answer:
A. q 0.55
Explanation:
Frequency of genotye "BB" 
Frequency of genotye "bb" 
Frequency of genotye "Bb" 
Frequency of bb is represented as "
" as per Hardy Weinberg's principle.
Thus, frequency q of the recessive allele b is represented by
Hence, option A is correct.
Answer:
There are seven main taxonomic ranks: kingdom, phylum or division, class, order, family, genus, species.
Explanation:
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
Answer:
The plus end for all actin filaments.(Ans. A)
Explanation:
All three types of muscles (cardiac, smooth, and skeletal) utilize actin filaments to generate force which leads to cell contraction. Actin filaments is organized into sarcomeres which function as the fundamental unit of contraction.
Sarcomeres are approx 2.4 micro meter in length, and they are bounded at both end with the help of Z-disks. Plus end of the Z-disks are oriented with actin filaments and their minus ends to the direction of center of the sarcomeres. Z-disk consist an actin capping protein, which is known as cap-Z. Cap-Z helps to bind plus end of the actin filaments.
