10 most difficult genetics riddlesNature quiz
The characteristic appearance of a person from a photo is a symptom of ...
Progeria is an extremely rare genetic disorder in which symptoms resembling aspects of aging are manifested at a very early age. Those born with progeria typically live to their mid-teens to early twenties. It is a genetic condition that occurs as a new mutation, and is rarely inherited as carriers usually do not live to reproduce.
Man has 46 chromosomes. How many chromosomes does kiwi plant have?
The cultivated kiwi fruit, Actinidia deliciosa, is a hexaploid species with a total number of 174 chromosomes. Many of cultivated plants are polyploids created by selective breeding, and are usually unable to interbreed with their diploid ancestors.
Is this a male, or a female cat?
it is not possible to tell
it is not a cat at all
This kind of coat coloring, which combines two colors other than white (black and red in this case), is known as tortoiseshell, and it is found almost exclusively in female cats. This is because the X chromosome determines the color of the cat, and there are no color genes in Y chromosome. Thus, female cats with XX chromosomes may be three colored (including white), while male cats with XY chromosomes cannot. (with the exception of very rare XXY sterile males).
What can be measured in centimorgans?
The distance between molecules in solution
The length of chemical bonds
the The distance between chromosome positions
The length of protein structures
In genetics, a centimorgan (abbreviated cM) is a unit for measuring genetic linkage. It is defined as the distance between chromosome positions for which the expected average number of intervening chromosomal crossovers in a single generation is 0.01. It is often used to infer distance along a chromosome. However, It is not a true physical distance.
How many chromosomes does a mule have? (A horse has 64, a donkey has 62)
It is infertile and does not have chromosomes
A mule is the offspring of a male donkey and a female horse. Mules have 63 chromosomes, a mixture of the horse's 64 and the donkey's 62.
Which cat breed is characterized by its lack of tail?
The Manx taillessness gene is dominant; kittens from two Manx parents are generally born without any tail. However, having two copies of the gene is lethal in utero, so breeders avoid breeding two entirely tailless Manx cats together. Typically, when bred with non-Manx cat, tail length is random throughout a litter of kittens.
How many pairs of chromosomes does a human have?
A typical human possesses 23 pairs of chromosomes, which add up to 46. Two of the chromosomes are gender related. A female will have two X chromosomes and a male will have one x and y chromosome. As you may have noticed, females do not have y chromosome.
Which diseases are exceptionally common among Amishes?
Since almost all Amish descend from about 200 18th-century founders, genetic disorders that come out due to inbreeding increase the mortality rate among Amish children. In contrast, cancer rates are 56 percent of the national rate.
Which animals are the closest relatives to humans?
Chimpanzees and humans share a common ancestor about four to six million years ago. The genetic similarity is so high, that the two species of chimpanzees, Pan troglodytes and Pan paniscus, have been proposed to belong with H. sapiens in the genus Homo, rather than in Pan.
Who is more likely to be colorblind?
everyone with the same probability
It is much less likely for a woman to be red-green colorblind than a man, since this common type of color blindness is caused by a recessive gene in the X chromosome. For a woman, both of her X chromosomes would have to be affected. A man only has one X chromosome, so he is more likely to be color-blind.