Really scientists won't think dhat it is false
The amount of food, water, and air might influence the population. If there is not enough of any of these, the population will decrease. This is because those factors are needed to survive.
Answer:
Scientists first discovered chromosomes in the nineteenth century, when they were gazing at cells through light microscopes. But how did they figure out what chromosomes do? And how did they link chromosomes — and the specific genes within them — to the concept of inheritance? After a long period of observational studies through microscopes, several experiments with fruit flies provided the first evidence.
Explanation:
Genes are contained in chromosomes, which are in the cell nucleus. A chromosome contains hundreds to thousands of genes. Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. A trait is any gene-determined characteristic and is often determined by more than one gene.
Answer:
a. Each cell has half the normal number of chromosomes and the cells are usually genetically different
Explanation:
Sperm cells, also known as spermatozoa or male gametes, are cells that contain a single set of chromosomes, i.e., they are haploid (n) cells. In fertilization, an egg cell (female gamete) and a sperm cell fuse to form a diploid (2n) zygote cell. Moreover, crossing over or recombination is the interchange of genetic material that occurs in the germline (i.e., both female gametes and male gametes). Crossing over occurs between non-sister chromatids during meiosis (prophase I). As a consequence of this process, gametes are not genetically aren't identical to one another.