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Why must the male provide an excess of gametes while the female does not?
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Is the gametophyte the dominant generation?
in bryophytes the sporophytes is diploid(2n) while the gametophyte in bryophytes is haploid(n).In bryophytes the sporophytes are totally or partially dependent on gametophytes while gametophytes are the dominant generation in bryophytes.Male sporophytes produce male spores and that of female produce megaspores of female spores while male gametophytes produce male gametes while female gametophytes produce female gametes
How are male and female gametes production different?
In males 4 sperms are produced from one cell while in female 1 egg and 3 polar bodies are produced in mammals .
Differtiat sexual reproduction to asexual reproduction?
Firstly, sexual reproduction requires the fusion of male and female gametes, in a process known as fertilisation, while on the other hand, asexual reproduction does not require the fusion of gametes. Secondly, sexual reproduction results in the offspring of the parents to have traits of both parents, due to the random fusion of gametes. While asexual reproduction results in the daughter organism being genetically similar to the mother.
What basic difference exists between the life cycle of higher plants and higher animals?
I got this from someone off of yahoo. I think the answer has something to do with how the gametes are formed. In animals, the gametes are formed from through spermatogenesis in males and oogenesis in females. The process the cells undergo is meiosis. In plants however, the formation of gametes have a few more steps. The spore phase, gametophyte phase and finally gametes. So the basic differences that exists between the life cycles of higher plants and higher animals is how the gametes are formed. Higher animals have "one" basic step to forming gametes while higher plants have several.
How is a spore different from a zygote?
When Chlamydomonas species reproduce sexually. The haploid cell divides first by mitosis to produce haploid gametes. After those gametes are released, a pair of gametes from diffrent Chlamydomonas individual fuse to form a pair. Each gamete sheds its cell walls. Then the gametes fuse into a diploid zygote with a thick protective wall called a Zygospore.
What are male gametes?
A gamete is one of two cells needed for sexual reproduction. Male gametes are sperm, while female gametes are eggs. When fused, they form a zygote.
What is the difference between microspores and megaspores?
microspores are the male gametes whilst megaspore are the female gametes. megaspore also known as megaspore mother cellor megasporocyte. it placed in female cone in the gumnosperm while the microspores placed in the male cone
Is the gametophyte the dominant generation?
in bryophytes the sporophytes is diploid(2n) while the gametophyte in bryophytes is haploid(n).In bryophytes the sporophytes are totally or partially dependent on gametophytes while gametophytes are the dominant generation in bryophytes.Male sporophytes produce male spores and that of female produce megaspores of female spores while male gametophytes produce male gametes while female gametophytes produce female gametes
How are male and female gametes production different?
In males 4 sperms are produced from one cell while in female 1 egg and 3 polar bodies are produced in mammals .
How many black actresses have won pageants?
nipplesIn biology, sex is a process of combining and mixing genetic traits, often resulting in the specialization of organisms into a male or female variety (each known as a sex). Sexual reproduction involves combining specialized cells (gametes) to form offspring that inherit traits from both parents. Gametes can be identical in form and function (known as isogametes), but in many cases an asymmetry has evolved such that two sex-specific types of gametes (heterogametes) exist: male gametes are small, motile, and optimized to transport their genetic information over a distance, while female gametes are large, non-motile and contain the nutrients necessary for the early development of the young organism.An organism's sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed hermaphroditic. Frequently, physical differences are associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience.
How does fertilization?
Fertilization means that the male and female gametes (reproductive cells) must come together. The details vary among different species; in humans, and many animals, this occurs through sexual intercourse, while in most plants, usually either the wind or insects carry the male gametes to the female ones.
Differtiat sexual reproduction to asexual reproduction?
Firstly, sexual reproduction requires the fusion of male and female gametes, in a process known as fertilisation, while on the other hand, asexual reproduction does not require the fusion of gametes. Secondly, sexual reproduction results in the offspring of the parents to have traits of both parents, due to the random fusion of gametes. While asexual reproduction results in the daughter organism being genetically similar to the mother.
Where is the male gametophyte located?
Gametes or, sex cells, are produced in the Ovaries (Female) and the Testes (Male). While Males continue to produce gametes, Females are born with the needed supply of gametes for what they will need in their life time.
Who are the current presidents of the world?
SEX In biology, sex is a process of combining and mixing genetic traits, often resulting in the specialization of organisms into male and female types (or sexes). Sexual reproduction involves combining specialized cells (gametes) to form offspring that inherit traits from both parents. Gametes can be identical in form and function (known as isogametes), but in many cases an asymmetry has evolved such that two sex-specific types of gametes (heterogametes) exist: male gametes are small, motile, and optimized to transport their genetic information over a distance, while female gametes are large, non-motile and contain the nutrients necessary for the early development of the young organism. An organism's sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed hermaphroditic. Frequently, physical differences are associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience. Sexual reproduction is a process where organisms form offspring that combine genetic traits from both parents. Chromosomes are passed on from one parent to another in this process. Each cell has half the chromosomes of the mother and half of the father. Genetic traits are contained within the deoxyribonucleic acid (DNA) of chromosomes — by combining one of each type of chromosomes from each parent, an organism is formed containing a doubled set of chromosomes. This double-chromosome stage is called "diploid", while the single-chromosome stage is "haploid". Diploid organisms can, in turn, form haploid cells (gametes) that randomly contain one of each of the chromosome pairs, via a process called meiosis. Meiosis also involves a stage of chromosomal crossover, in which regions of DNA are exchanged between matched types of chromosomes, to form a new pair of mixed chromosomes. Crossing over and fertilization (the recombining of single sets of chromosomes to make a new diploid) result in the new organism containing a different set of genetic traits from either parent. In many organisms, the haploid stage has been reduced to just gametes specialized to recombine and form a new diploid organism; in others, the gametes are capable of undergoing cell division to produce multicellular haploid organisms. In either case, gametes may be externally similar, particularly in size (isogamy), or may have evolved an asymmetry such that the gametes are different in size and other aspects (anisogamy). By convention, the larger gamete (called an ovum, or egg cell) is considered female, while the smaller gamete (called a spermatozoon, or sperm cell) is considered male. An individual that produces exclusively large gametes is female, and one that produces exclusively small gametes is male. An individual that produces both types of gametes is a hermaphrodite; in some cases hermaphrodites are able to self-fertilize and produce offspring on their own, without a second organism.
What are the possible gametes for AAA AAA?
A gamete is haploid (1N) so 'Aa' & 'AA' are diploid and during cell division (mitosis) gametes are formed and then 2 gametes merge together to make a diploid (think of sperm and egg, each is haploid or 1N, when fertilization occurs the egg and sperm form 1 cell that is 2N or diploid). So the possible gametes for 'Aa' would be 'A' & 'a' while for 'AA' the only gametes possible are 'A' If the question is asking what the possible gametes are for 'AaBB' the haploid (gamete) can be 'AB' or 'aB'
What does the term excess in travel insurance mean?
In the USA excess usually means that the benefits are over and above any other insurance that you might have in your primary policy, For example, a homeowners policy may provide a stated benefit for lost luggage while traveling. For an additional premium, you may be able to buy an excess travel policy that provides benefits for an additional amount of coverage for the same type of loss.
What basic difference exists between the life cycle of higher plants and higher animals?
I got this from someone off of yahoo. I think the answer has something to do with how the gametes are formed. In animals, the gametes are formed from through spermatogenesis in males and oogenesis in females. The process the cells undergo is meiosis. In plants however, the formation of gametes have a few more steps. The spore phase, gametophyte phase and finally gametes. So the basic differences that exists between the life cycles of higher plants and higher animals is how the gametes are formed. Higher animals have "one" basic step to forming gametes while higher plants have several.
