A, Kingdom Monera (Archaebacteria) - Numerous members of the remaining kingdoms (Fungi, Plantae, Protista) are not microscopic and hence do not require a microscope to be viewed.
Answer:
The correct option is <u>E. Bring in some elephants of reproductive age from other populations within southern Africa</u>
Explanation:
Inbreeding depression can be described as a phenomenon in which the fitness of a particular kind of species is reduced due to inbreeding of the organisms.
As the Addo National Park contains only a few elephants, hence there are only a few chances of diversification in their breeding patterns. If other elephants are brought into the Park, then there will be more options for breeding and breaking the inbreeding depression.
Answer:
Cross overs can lead to formation of chromosome pairs that have no mutant allele.
Explanation:
Cross overs can lead to formation of chromosome pairs that have no mutant allele.
For example -
Suppose "X" is a mutant allele and "x" is a mutant free allele.
Now when two homologous chromosomes contains a single mutant allele in different parts of the chromosome are crossed the following offspring are produced
X x
X XX Xx
x Xx xx
"xx" is a mutant free genotype.
Thus, crossing over can create a single mutation-free chromosome
Answer:
D. Nucleus.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.
Proteins on the surface of vesicles determine where the vesicles go.
The nucleus is the cell organelle which provides the instructions for these proteins. It controls all the activities taking place in the cell and the synthesis of proteins.
