Well, it depends on the conditions on the planet/moon. Does it have water? Soil for crops? Oxygen? Poisonous air? Is the temperature incredibly high, or low? The necessary equipment for survival on the planet/moon depends on what's needed.
The *heart* is the main organ of the circulatory system.
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
Answer:
The testes produce spermatocytes (sperm) while ovaries produce oocytes (ova)
Explanation:
They are produced by the process of meiosis I on the parent cell than meiosis II. In the testes, the process is called spermatogenesis while in ovaries the process is referred as oogenesis. These processes are regulated by gonadotropins Follicle Stimulating Hormone and Luteinizing Hormone.
Answer:
d.both b and c
Explanation:
meiosis can occur in diploid cells because the chromosomes duplicate once, and through two successive divisions, four haploid cells are produced, each with half the chromosome number of the parental cell and also Meiosis occurs only in sexually reproducing organisms.
Mitosis is not restricted to diploid cells.Because Mitosis means Equational division i. e the number of chromosome will remain same after division. So it can occur in both diploid as well as in haploid cells.
A phenotype is a physical characteristic which is visible. Hence when the resulting combinations have two dominant alleles or even one dominant allele, the dominant characteristic is exhibited. The recessive characteristic is exhibited only when both the alleles are recessive.
To find the ratio of phenotypes, we need to place the genotype of the father and mother in a grid form ( attached grid figure)
Here we have two Ff phenotypes which is dominant and two ff phenotypes which is recessive
Hence the ratio is 2:2 or 1:1