Answer:
You must therefore be aware that the skull of craniate (with skull) vertebrates consists of different parts which enclose the brain, cranial nerves and other sense organs present in the head. The part of the skull, enclosing the brain is called the cranium and is composed of several bones.
The answer to this would be true.
Answer:
D} Yes, it takes about one earth month.
Explanation:
The Moon does spin on its axis a rotation once every 27 days so if theirs 29-31 days in each month it would be almost one earth moth so there for its D.
{Hope this helps} : )
Answer:
b. Pleiotropy
Explanation:
The term “pleiotropy“ refers to a situation in which variants in a single given gene have a number of different, seemingly unrelated effects in the resulting phenotype.
For instance: patients with mutations in the COL1A1 gene (codifying for collagen alpha-1 chain) may present with a genetic disease called “osteogenesis imperfecta”, characterized by (among other findings) bluish sclera, brittle bones, and deafness. All those disparate clinical manifestations may be traced back to the inability of the body to produce normal type 1 collagen.
Answer:
The correct answer will be option-A
Explanation:
Chromosomal abnormalities are caused when the chromosome pair fails to disintegrate through a process called non-disjunction. The non-disjunction of chromosomes usually takes place at the anaphase I or II of meiosis I which involves the X and Y chromosomes.
The abnormality observed with 45 chromosomes or reduction in one sex chromosome or 45, XO is caused when one X copy of a chromosome is completely absent in the cell.
The cause for the loss of one chromosome is the non-disjunction during meiosis I.
Thus, option-A is the correct answer.
