The answer is D, Only meiosis results in a reduction in chromosome number
The warming of said environment or planet. by emitting carbon and other gasses that create a thin layer of different gasses that trap the heat from the suns rays and breaks down the ozone layer.
Answer:
Scientific names of animals use both the genus and species name, which is much more specific than common names, and gives more information.
For example, using the name cat just tells us that the animal is a cat
however, the scientific name felis catus, tells us that the species is catus and the genus is felis
Explanation:
Answer:
The correct answer is CLEAR CUTTING THE RAIN FOREST
Explanation:
The factors that affect the survival of living organisms can be divided into two major groups, which are density dependent and density independent factors. Density dependent factors refers to those factors that their impacts depend on the size of the population. Example of such factors are food availability, predation, migration and diseases.
Density independent factors on the other hand refers to those factors that affect population size regardless of their sizes. Examples of such factors are temperature, natural disasters, human activities, etc.
In the question given here, the clear cutting of the rain forest is brought about by human activity and is an example of density independent factor.
Humans are diploid organisms that have 23
pairs of chromosomes (or 46 chromosomes) in
all somatic or body cells. These cells divide by
mitosis that forms daughter cells with same
number of chromosome pairs as present in
parent cell.
In humans, gametes (eggs and sperms) are
formed from the germ cells by the process of
meiosis that leads to reduction of chromosomes
in daughter cells (with half the number of
chromosomes as present in parent cell).
Thus, the correct options are:
-bone cell has 46 chromosomes, as bone is a
somatic cell.
-Skin cell has 23 chromosome pairs (46
chromosomes), as skin cell is somatic cell.
-gamete has half the chromosomes (23
chromosomes) of a red blood cell (46
chromosomes) as red blood cell is somatic cell.
