The phylum Arthropoda includes four major lineages: 1. cheliceriforms (also called chelicerates)2. myriapods3. insects and their relatives (together called hexapods) 4. crustaceansDrag each word or phrase to the appropriate bin.

Phylum Arthropod is the largest phylum which contain about 5-8 million animal species which are occupying 80% of the total living  animal species.

The main 5 sub phylum of arthropods are Trilobites,Chelicerates,Myriapods, Crustaceans,Hexapods.

Explanation:

Chelicerates-

This group of arthropod includes spider,mites,horse shoe crab,tick etc

The main characteristics of this group are presence of 6 pairs of appendages where 4 pairs are used for walking and two pairs are used as mouth parts.They lack mandible and antennae.

Myriapods-

Centipedes and millipedes are including this group which are quite similar with the worm like creature.

They have round body with 2 pairs of legs on both the body segments and make burrow in the soil. They contain more than 20 legs, 1 pair of antennae,presence of tough exoskeleton which protects them from environmental hazards.

Hexapods-

The name is given as they contain 3 pairs of legs and body is divided into head, thorax and abdomen.They bear 1 pair of antennae and mandible as a mouth organ.The abdomen is 11 segmented and bear have reproductive organs.They may be with wing or without wings.

Crustaceans-

This group includes crabs,lobsters, crayfish etc are mainly free living or terrestrial,parasitic or sessile forms which contain 3 regions the head, thorax and abdomen which is covered by carapace and is protected by exoskeleton.

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.