Answer:
Explanation:
A skeletal muscle cell is surrounded by a plasma membrane called the sarcolemma with a cytoplasm called the sarcoplasm. A muscle fiber is composed of many fibrils, packaged into orderly units.
Answer: False
The variations in expression depends on how genes code for proteins
that would specify whether it will be dominant or recessive allele. Within a population, there may be a number of
alleles for a given gene and these differences
can cause variations in the protein that is produced. The change in protein
expression affect traits due to the variations in protein activity or
expression that produce different phenotypes.
<span>Moreover, individuals that have copies of
different alleles are known as heterozygous
and individuals that have two copies of the same
allele are referred to a homozygous. The expression patterns observed in
inheritance will depend on whether the allele is found on an autosomal
chromosome or a sex chromosome, and on whether the allele is dominant or recessive.</span>
They allow the heart to pump more blood by decreasing the ESV.
