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12 answers

yes

2007-03-01 00:47:25 · answer #1 · answered by mat l 3 · 0 2

it's not at all true. genotype and phenotypic expression are based solely on the inherited alleles from BOTH parents. though height may be determined from several genetic foci, a very basic example would be:

say a mother has the genotype Aa - heterozygous for being tall, and the father is rather short, with a genotype of aa - homozygous for being short, then there is a chance of offspring with the genotypes of Aa or aa. sooo basically the offspring could have phenotypic expressions of being tall or short.

hope that helps? :)

2007-03-01 08:51:56 · answer #2 · answered by sassinstyle 2 · 0 0

Absolutely not!

An individual's physical characteristics (which include height) is determined by genetic factors of both parents and there is a possibility that children may inherit certain characteristics from their father which is different to their mother's, height being one of them. Therefore if a father is short in stature and this trait is passed on to his son, he can be shorter than his mother.

Environmental factors may also contribute as well eg. nutrition whilst growing up etc.(as mentioned by previous posters!).

2007-03-01 08:56:19 · answer #3 · answered by Brewmaster 4 · 0 0

Not all. In fact, my mother is about two inches taller than me. Height is determined partly by genetics, and involves dominant and recessive genes. But height is also much more sensitive to environmental factors than other physical attributes. If a child has better nutrition than his or parents had, he or she has a greater potential to grow taller than them. If a child is malnourished, he or she may not grow as tall as his or her parents if they were not also malnourished in their childhoods. As a result, any male or female child could easily be shorter than both parents, taller than both parents, or intermediate in height between his or her parents.

2007-03-01 08:50:29 · answer #4 · answered by DavidK93 7 · 0 0

No. There are very few absolutes in biology and genetics. Height is one of them.

"Human traits like height, skin color, and blood type do not fall into the patterns or explanations that Mendel discovered using 1 trait crosses in pea plants. The wide range of possible outcomes is due to the fact that humans unlike pea plants can have many genes controlling one trait, many alleles for one trait or can have a greater environmental influence. " http://www.msu.edu/~hawkin79/ScienceSystems/Unitoutlines/Modern%20Genetics.htm

2007-03-01 08:56:47 · answer #5 · answered by Anonymous · 0 0

It depends on the genes of the son. The height may varies over time on different people.

2007-03-01 09:41:42 · answer #6 · answered by Anonymous · 0 0

I don't believe we can accurately make that generalization. It all has to do with genetics and the height traits (alleles) of both the mother and father, in which case, any combination could arise (tall, short, or medium height).

2007-03-01 10:42:48 · answer #7 · answered by ANT-a-gonistic 3 · 0 0

not all,when living things reproduce,their characteristics are passed on to their young.By doing so,living things ensure the continuity of their own kind.

2007-03-01 09:41:04 · answer #8 · answered by ree06 1 · 0 0

of course NOT

2007-03-01 08:47:53 · answer #9 · answered by Nikko 2 · 0 1

No

2007-03-01 08:45:58 · answer #10 · answered by CottSD 2 · 0 1

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