Which taxon group is more specific, in regards to organisms that are in that group?

mammalia

tursiops

which taxon group is more specific, in regards to organisms that are in that group?

chordata

cetacea

which taxon group is more specific, in regards to organisms that are in that group?

truncatus

delphinidae

which taxon group is more specific, in regards to organisms that are in that group? hint: review binomial nomenclature

tursiops

truncatus

The correct answers are:

1. Tursiops;

Tursiops is a more specific taxon than mammalia as it is referring to only a single branch from the very large mammalian taxon.

2. Cetacea;

Cetacea is a more specific taxon than Chordata because it is referring to only a relatively small group of animals that are closely related, while Chordata is a taxon that includes all vertebrates.

3. Truncatus;

Truncatus is more specific taxon than Delphinidae because it is referring to a species, while Delphinidae is referring to the whole family in which the Truncatus species belongs.

4. Truncatus;

Truncatus is  more specific taxon than Tursiops as it is referring to a species, while Tursiops is referring to a whole branch of closely related species.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.