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The cross Lpq lPQ and lpq lpq is carried out and the L gene is found to be in the middle What would be the genotypes of the double crossover gametes in this cross?
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∙ 12y ago
PLQ and plq
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∙ 12y ago
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In double fertilization a zygote and what are formed?
endosperm
An organisms gametes have double the number of chromosomes found in the organisms body cells.?
No, a gamete has half the number of chromosomes as compared to the organisms body cells.
Where does the process of double fertilization occur in plants?
The Generative nucleus arrives at the embryo sac inside the ovule and undergoes division to produce two haploid male nuclei. One of the male nuclei fuses with the haploid female gamete nucleus and for a diploid zygote. The other Male nuclei fuses with 2 polar female gametes to produce the triploid nucleus. This is known as the endosperm nucleus and it acts as a food source for developing zygote.
What are the steps of fertilization in flowering plants?
Fertilization in plants is achieved by union of male gamete with an egg nucleus. The first step in fertilization is formation of male and female gametes, Second step is transfer of male gametes containing pollen to stigma of female reproductive organ by pollination. The third step is germination of pollen grain for movement of male gamete to the vicinity of female gamete. The fourth step is the union of the nucleus of male gamete with egg nucleus in the embryo sac. The fourth step of fertilization in angiosperms is the act of double fertilization. During this process one of the two gametes released by a pollen tube fuses with secondary nucleus. The secondary nucleus is formed by fusion of two nuclei of embryo sac. Thus double fertilization is also called triple fusion.
Why is it important to have haploid gametes?
To prevent the chromosome number from doubling every generation.Sexual reproduction involves two cells (gametes) combining their chromosomes. The process is fertilization, and the product is a zygote.If each gamete has a single set of chromosomes (as happens in humans, most other animals, and many plants) the zygote will have two sets of chromosomes. Whatever the zygote grows into, whether a person, pelican, or pineapple, every cell in the body will have two sets. If the gametes also have two sets each, the next zygote will have four, and so on, until you need a wheelbarrow to carry your chromosomes around!So every life-cycle that includes a doubling of the chromosome number also includes a halving, and that process is called meiosis. Meiosis occurs at different times in different life-cycles. In humans meiosis happens when the gametes are being formed, but in plants it happens when spores are being formed.
How do you do a double crossover in basketball correctly?
uhh
In double fertilization a zygote and what are formed?
endosperm
Suppose that for an organism 2n 8 how many chromosomes do the organism's gametes contain?
4. Two gametes get together to make something new. Just double up!
Is it possible to play sadx for PC on mac?
Yes you can! Ok you can get the 7-Day free trial of CrossOver Games or you can buy it. Then put in the disk and CrossOver Games will ask you if you want to install it. Click Install. When its finished, double-click "Sonic.exe" or "autorun.exe" and your good to go!
An organisms gametes have double the number of chromosomes found in the organisms body cells.?
No, a gamete has half the number of chromosomes as compared to the organisms body cells.
Can ipratropium bromide cause a cough?
No. Ipatropium is a treatment for cough. It has been shown to reduce cough for viral upper respiratory tract infections in a double crossover trial.
What gametes can be produced from TtGg?
Assuming you mean the individual is double heterzygous for genes M and T, i.e. M/m and T/t, and assuming that the genes are unlinked, equal proportions of these 4 gametes will be formed: MT, Mt, mT and mt.
What might happen inf the gametes of a species has the same number of chromosomes as the species' body cells?
in human being's normal cells 46 chromosomes are found whereas in gametes half of the chromosomes,that is;23 are found if gametes will have same no. of chromosomes as in normal cells than in offspring (46+46=92)chromosomes will be found but it can't happen
Why inefficient braking create in Double Girder Electric overhead travelling crane?
Due to double girder the load of hoist is carried by two beams, so inefficient braking takes placd
What is the similarity in fertilisation between the sexual reproduction of flowering plants and humans?
Fertilization is the union of male gamete (sperm) with the female gamete or egg. Two male gametes in flowering plants are transferred through the pollen tube and there is double fertilisation. That is, out of two male gametes one fuses with the egg to form zygote and the other with secondary nucleus to form primary endosperm cell. In humans several male gametes swim through their tail to reach the ovum and only one fuses with it to form zygote.
Where does the process of double fertilization occur in plants?
The Generative nucleus arrives at the embryo sac inside the ovule and undergoes division to produce two haploid male nuclei. One of the male nuclei fuses with the haploid female gamete nucleus and for a diploid zygote. The other Male nuclei fuses with 2 polar female gametes to produce the triploid nucleus. This is known as the endosperm nucleus and it acts as a food source for developing zygote.
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.
