Answer:
The correct answer is C. It is not true of deuterostomates that the mouth forms from the blastopore.
Explanation:
Deuterostomates are a group of meta-zoises celomated with bilateral symmetry that have the oral opening not derived from the embryonic blastopore, but formed in a secondary way.
The segmentation of the egg is generally radial and the blastopore forms the anus. The mouth forms from the ectoderma and the mesoderma is formed by enterocele. The discussion about the phylogeny of deuterostomates and protostems has not been fully established.
Answer:
Gametes are the reproductive cells or sex cells of an organism, found in both males and females. When they go through meiosis, the daughter cells end up with genetically unique chromosomes.
Explanation:
Answer:
Arteries
Explanation:
There are three main types of blood vessels: veins, arteries, and capillaries. Arteries are the blood vessels that carry the oxygenated blood from the heart to various body parts. Veins pick the deoxygenated blood and deliver it to the heart to be oxygenated.
Arteries are the blood vessels with thick walls and no valves. Blood is pumped with higher pressure from the heart into arteries. The pulmonary artery is the only exception that carries deoxygenated blood from the right ventricle to the lungs for oxygenation.
Earth is the largest terrestrial planet
Gregor Mendel started experiments on inheritance in the 19. century. The basis of inheritance patterns is the fact that diploid cells contain two copies of the genome and that a gene has different variants, called alleles.Alleles can be dominant (for example, marked A) and recessive (for example, marked a). In a gene locus (position of a gene) there are only two alleles, one from the mother and the other from the father.If individuals have two copies of the same allele they are homozygous (AA (dominant homozygous) or aa (recessive homozygous)). If individuals have two different alleles they are heterozygous (Aa).In autosomal dominant traits, the phenotype is present if both copies of the dominant allele (A) are present (homozygous individuals AA) or only one copy of the dominant allele is present (heterozygous individuals Aa).In autosomal recessive traits, the phenotype is present if both copies of the recessive allele (a) are present (homozygous individuals aa).This is complicated in sex-linked trait, because there are two X cromosomes in females and one X chromosome and one Y chromosomes in males, so terms dominant and recessive are not reliable.It should also be taken into consideration that many traits are complex and caused by many genes interaction and/or environment conditions.