30 relations: Asexual reproduction, Autosome, Bird, Boa constrictor, Bombyx mori, Butterfly, Chromosome, Common descent, Crustacean, Egg cell, Embryo, Fish, Haplodiploidy, Heterogametic sex, Insect, Komodo dragon, Lepidoptera, Macrobrachium rosenbergii, Meiosis, Moth, Nature (journal), Platypus, Sex-determination system, Sexual differentiation, Sperm, Temperature-dependent sex determination, X chromosome, X0 sex-determination system, XY sex-determination system, Y chromosome.
Asexual reproduction is a mode of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes and almost never changes the number of chromosomes.
An autosome is a chromosome that is not an allosome (i.e., not a sex chromosome).
Birds (class Aves) are a group of endothermic vertebrates, characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton.
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The Boa constrictor or red-tailed boa is a species of large, heavy-bodied snake.
The silkworm is the larva or caterpillar of the domesticated silkmoth, Bombyx mori (Latin: "silkworm of the mulberry tree").
Butterflies are part of the class of insects in the order Lepidoptera, along with the moths.
A chromosome (''chromo-'' + ''-some'') is a packaged and organized structure containing most of the DNA of a living organism.
Common descent describes how, in evolutionary biology, a group of organisms share a most recent common ancestor.
Crustaceans (Crustacea) form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles.
The egg cell, or ovum, is the female reproductive cell (gamete) in oogamous organisms.
An embryo is a multicellular diploid eukaryote in its earliest stage of development, from the time of fertilization through sexual reproduction until birth, hatching, or germination.
A fish is any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits.
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Haplodiploidy is a sex-determination system in which males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and are diploid.
Heterogametic sex (digametic sex) refers to the sex of a species in which the sex chromosomes are not the same.
Insects (from Latin insectum, a calque of Greek ἔντομον, "cut into sections") are a class of invertebrates within the arthropod phylum that have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae.
The Komodo dragon (Varanus komodoensis), also known as the Komodo monitor, is a large species of lizard found in the Indonesian islands of Komodo, Rinca, Flores, Gili Motang, and Padar.
The Lepidoptera is an order of insects that includes moths and butterflies (both called lepidopterans).
Macrobrachium rosenbergii, also known as the giant river prawn, giant freshwater prawn, Malaysian prawn, freshwater scampi (especially in India: in West Bengal it is called Golda Chingdi), or cherabin, is a species of freshwater shrimp native to the Indo-Pacific region, northern Australia and Southeast Asia.
Meiosis is a specialized type of cell division which reduces the chromosome number by half.
Moths are a group of insects related to butterflies belonging to the order Lepidoptera.
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Nature is a British interdisciplinary scientific journal, first published on 4 November 1869.
The platypus (Ornithorhynchus anatinus) also known as the duck-billed platypus is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania.
A sex-determination system is a biological system that determines the development of sexual characteristics in an organism.
Sexual differentiation is the process of development of the differences between males and females from an undifferentiated zygote.
Sperm is the male reproductive cell and is derived from the Greek word (σπέρμα) sperma (meaning "seed").
Temperature-dependent sex determination (TSD) is a type of environmental sex determination in which the temperatures experienced during embryonic development determine the sex of the offspring.
The X chromosome is one of the two sex-determining chromosomes (allosomes) in many animal species, including mammals (the other is the Y chromosome), and is found in both males and females.
The X0 sex-determination system is a system that determines the sex of offspring among grasshoppers, crickets, cockroaches, and some other insects.
The XY sex-determination system is the sex-determination system found in humans, most other mammals, some insects (Drosophila), and some plants (Ginkgo).
The Y chromosome is one of two sex chromosomes (allosomes) in mammals, including humans, and many other animals.