Several black guinea pigs of the same genotype were mated and prodiced 29 black and 9 white offspring...?
152790
Both parent were heterozygous
272812
generally male guinea pigs will fight with each other, even if they are neutered, unless they are brothers and were raised together and there are no females present. probably the only way to get them to stop fighting is to seperate them, but if they are not actually fighting and hurting each other, then i wouldnt worry about it. my guineas are two brothers, both neutered, and they still purr at each other at times, but it never escalates to fighting. if they start chattering their teeth thats a sign that they're serious about fighting, so at that point they would need to be seperated. if that happens, you can get them each a female since they cant get pregnant now anyhow!! i've had male and female pigs before and they didnt fight.
975697
You would get two different genotypes and phenotypes.\nIf you were crossing a tall, heterozygous plant, Tt with a short plant, tt, you would get 50% Tt and 50% tt.
969016
I believe that these questions  relate to the "Hardy-Weinberg equalibrium" for population genetics.\nP(purple/dominant)=700 or .7\nq(White/recess.)=300 or .3\nP+q= 100% or 1.00\nPlug these numbers into the quadratic equation:\nP squared + 2Pq + q squared  = 1.00\nnote: the 2Pq represents the hybrib condition\n\n#1 P=.7 , q =.3      Ans.  B\n#2  2(.7)(.3) = .42        Ans. ????\n#3      Ans. A ??\n#4  q = .0001 Ans. A\n#5 2(.9999)(.0001) = .00019   Ans.A
232909
There are more than 30,000 different kinds of protozoa
213159
http://www.bio.davidson.edu/courses/bio112/bio112labman/cppig.html
1079080
no they are a different species
925058
Assuming Black is dominant (B) and Albino is recessive (b)\n\nThe first cross produced all black\nbb x BB\n---B-----B\nb Bb----Bb\nb Bb----Bb\nFrom here, you can see that all the offsprint have one dominant Black gene, so they will all be black.\n\n\nThe second cross had about half albino\nbb x Bb\n---B-------b\nb  Bb-----bb\nb  Bb-----bb\nFrom this one, you can see that half of the offspring are homozygous recessive bb, and are albino.\n\n(Ignore the ---- in hte cross, they don't mean anything, they are just for spacing because yahoo deletes multiple spaces)
617173
Pigs and humans: no.\nChimps and humans: maybe.\n\nHonestly, the scientific jury is still out on whether or not humans are able to crossbreed with apes.  Rumours have cropped up within the scientific community for years, but no definitive cases have presented themselves.  Check out the link below for some interesting reading on the topic.
449435
nope... they have a difference level of chromosomes,\n\n\nthey more than liekly could try.. but the results would be more than likely dead and birth from physical problems such as no lungs, or no heart etc..\n\ndifferent animals have maanged to mate ouside thier chromosome levels, such as the donkey and horse, and the lion and tigers (Ligers).. normally these animals do not last a full age and have birth defects.
1032840
OK.  Instances of evolution (speciation, not just adaptation to pesticides or antibiotics through selection):\n\nEvening Primrose (Oenothera gigas)\n\nWhile studying the genetics of the evening primrose, Oenothera lamarckiana, de Vries (1905) found an unusual variant among his plants. O. lamarckiana has a chromosome number of 2N = 14. The variant had a chromosome number of 2N = 28. He found that he was unable to breed this variant with O. lamarckiana. He named this new species O. gigas.\n\nRaphanobrassica\n\nThe Russian cytologist Karpchenko (1927, 1928) crossed the radish, Raphanus sativus, with the cabbage, Brassica oleracea. Despite the fact that the plants were in different genera, he got a sterile hybrid. Some unreduced gametes were formed in the hybrids. This allowed for the production of seed. Plants grown from the seeds were interfertile with each other. They were not interfertile with either parental species. Unfortunately the new plant (genus Raphanobrassica) had the foliage of a radish and the root of a cabbage.\n\nStephanomeira malheurensis\n\nGottlieb (1973) documented the speciation of Stephanomeira malheurensis. He found a single small population (< 250 plants) among a much larger population (> 25,000 plants) of S. exigua in Harney Co., Oregon. Both species are diploid and have the same number of chromosomes (N = 8). S. exigua is an obligate outcrosser exhibiting sporophytic self-incompatibility. S. malheurensis exhibits no self-incompatibility and self-pollinates. Though the two species look very similar, Gottlieb was able to document morphological differences in five characters plus chromosomal differences. F1 hybrids between the species produces only 50% of the seeds and 24% of the pollen that conspecific crosses produced. F2 hybrids showed various developmental abnormalities.\n\nDobzhansky and Pavlovsky (1971) reported a speciation event that occurred in a laboratory culture of Drosophila paulistorum sometime between 1958 and 1963. The culture was descended from a single inseminated female that was captured in the Llanos of Colombia. In 1958 this strain produced fertile hybrids when crossed with conspecifics of different strains from Orinocan. From 1963 onward crosses with Orinocan strains produced only sterile males. Initially no assortative mating or behavioral isolation was seen between the Llanos strain and the Orinocan strains. Later on Dobzhansky produced assortative mating (Dobzhansky 1972).\n\nApple Maggot Fly (Rhagoletis pomonella)\n\nRhagoletis pomonella is a fly that is native to North America. Its normal host is the hawthorn tree. Sometime during the nineteenth century it began to infest apple trees. Since then it has begun to infest cherries, roses, pears and possibly other members of the rosaceae. Quite a bit of work has been done on the differences between flies infesting hawthorn and flies infesting apple. There appear to be differences in host preferences among populations. Offspring of females collected from on of these two hosts are more likely to select that host for oviposition (Prokopy et al. 1988). Genetic differences between flies on these two hosts have been found at 6 out of 13 allozyme loci (Feder et al. 1988, see also McPheron et al. 1988). Laboratory studies have shown an asynchrony in emergence time of adults between these two host races (Smith 1988). Flies from apple trees take about 40 days to mature, whereas flies from hawthorn trees take 54-60 days to mature. This makes sense when we consider that hawthorn fruit tends to mature later in the season that apples. Hybridization studies show that host preferences are inherited, but give no evidence of barriers to mating. This is a very exciting case. It may represent the early stages of a sympatric speciation event (considering the dispersal of R. pomonella to other plants it may even represent the beginning of an adaptive radiation). It is important to note that some of the leading researchers on this question are urging c
974197
I asked that question, and there is no known mechanism. There is however a mechanism that keeps different species from being able to interbreed.
363324
There is no proven connection at this time, hence it being a "theory." There are definite similarities, like we share 93% of the same genetic similarities with orangutans.
922676
Hmmm...someone said pigs have orgasms that last for 30 minutes.  That is awfully tempting...
972280
As far as ur first option is concerned every species has got a specific no. of chromosomes the two cell developed into a complete tadpoles they got to have same chromosome no. unless diseased.\nOption - b - Genotype that is genetic arraangement after the fusion of gametes, since the hair was tied in the two celled stage that is after fertilization they will have same genotype .\nOption - d - Sex in amphibians is also determined at the time of fertilization, after fertilization the two cells were seperated they will have the same sex.\nOption -c is incorrect because phenotype of a indiviual is also affected by the environment. Even the identical twins differ in some aspects so phenotype of the two tadpoles will be somewhat different
590227
Don't worry about it. the guinea pigs are taking over. all hail the guinea pigs!
39218
36,419,434 is black, and 12.9% is