nether, but the sperm does. there are 2 different types of sperm, one that makes the offspring male and one that makes the offspring female. the thing that makes the 2 types of sperm are called chromosomes.
This is what i found on wikipedia:
XX/X0 sex chromosomesMain article: XY sex-determination systemThe XX/XY sex-determination system is the most familiar sex-determination systems, as it is found in human beings, most other mammals, as well as some insects. However, at least one monotreme, the platypus, presents a particular sex determination scheme that in some ways resembles that of the ZW sex chromosomes of birds, and also lacks the SRY gene, whereas some rodents, such as several Arvicolinae (voles and lemmings), are also noted for their unusual sex determination systems. The platypus has ten sex chromosomes; males have an XYXYXYXYXY pattern while females have ten X chromosomes. Although it is an XY system, the platypus' sex chromosomes share no homologues with eutherian sex chromosomes.[1] Instead, homologues with eutherian sex chromosomes lie on the platypus chromosome 6, which means that the eutherian sex chromosomes were autosomes at the time that the monotremes diverged from the therian mammals (marsupials and eutherian mammals). However, homologues to the avian DMRT1 gene on platypus sex chromosomes X3 and X5 and suggest that its possible the sex-determining gene for the platypus is the same one that is involved in bird sex-determination. However, more research must be conducted in order to determine the exact sex determining gene of the platypus.[2]
In the XY sex-determination system, females have two of the same kind of sex chromosome (XX), while males have two distinct sex chromosomes (XY). Some species (including humans) have a gene SRY on the Y chromosome that determines maleness; others (such as the fruit fly) use the presence of two X chromosomes to determine femaleness. The XY sex chromosomes are different in shape and size from each other unlike the autosomes, and are termed allosomes.
XX/X0 sex determinationMain article: X0 sex-determination systemIn this variant of the XY system, females have two copies of the sex chromosome (XX) but males have only one (X0). The 0denotes the absence of a second sex chromosome. This system is observed in a number of insects, including the grasshoppers and crickets of order Orthoptera and in cockroaches (order Blattodea).
The nematode C. elegans is male with one sex chromosome (X0); with a pair of chromosomes (XX) it is a hermaphrodite.
ZW sex chromosomesMain article: ZW sex-determination systemThe ZW sex-determination system is found in birds and some insects and other organisms. The ZW sex-determination system is reversed compared to the XY system: females have two different kinds of chromosomes (ZW), and males have two of the same kind of chromosomes (ZZ). In the chicken, this was found to be dependent on the expression of DMRT1.[3]
HaplodiploidyMain articles: Ploidy and Haplodiploid sex-determination systemHaplodiploidy is found in insects belonging to Hymenoptera, such as ants and bees. Unfertilized eggs develop into haploid individuals, which are the males. Diploid individuals are generally female but may be sterile males. Thus, if a queen bee mates with one drone, her daughters share ¾ of their genes with each other, not ½ as in the XY and ZW systems. This is believed to be significant for the development of eusociality, as it increases the significance of kin selection. This[clarification needed] is common also in wasps that are parasitic and in the male greenflies.
Yes, almost all mammals do.
The only exceptions are the monotremes, egg-laying mammals, which include the platypus, the long-beaked echidna and the short-beaked echidna.
Yes, they can choose the gender of the joey.
Yes.
They can choose the sex of the unborn baby.
No. Pouches are only found on female marsupials, so only the female kangaroo carries the baby.
No. Kangaroos are mammals, and no male mammals (or any other vertebrates) give birth. Only the females give birth.
Simple answer: Male kangaroos have rather obvious male reproductive parts, and females have a pouch.
Yes, it can.
Yes. They are placental mammals, all of which give birth to live young. Kangaroo rats are not the same as rat kangaroos, which are Australian marsupials (and also give birth to live young).
A Kangaroo!!
A marsupial is an animal that has a pouch. A kangaroo has a pouch so it is considered a marsupial. A kangaroo uses the pouch to carry their young after they give birth.
Tigers are viviparous; they are mammals that give birth to live young that have matured within the mother's body.
Yes, most mammals give birth to live babies. Only the platypus, and echidna (spiny ant-eater) lay eggs. Even marsupials such as the kangaroo give birth to live, albeit underdeveloped babies.
A kangaroo joey weighs about 0.5 grams at birth.
Whether this question is in reference to the Red-necked Wallaby or the Red Kangaroo, the answer is still "no". All members of the kangaroo family are marsupials, which give live birth. The only egg-laying mammals are the platypus and the echidna.
Mammals like : cats, tiger, lioness, zebra, kangaroo and Dogs
kangaroo
Koalas have live births. They give birth like other animals but as they are marsupials their young are extremely small (bean-sized) so they grow up in the mother's pouch the same way a Kangaroo rears her young.
Kangaroos give birth to live young, as they are marsupials. The only egg-laying mammals are the platypus and the echidna.
There is no species called the Red Tree Kangaroo. The animal which many people believe is a red tree kangaroo is actually a Golden-mantled tree Kangaroo. Female tree kangaroos tend to give birth within the safey of tree branches off the ground.