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Why are the effects of genotypes with extra X chromosomes apparently less severe than those of other trisomies?
Wiki User
∙ 10y ago
The effects of genotypes with extra X chromosomes are less sever than those of other trisomies because of the amount of developmental issues and normalcy.
Wiki User
∙ 10y ago
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Can a person with 45 or 48 chromosomes survive?
Someone with 45 chromosomes can survive if the missing chromosome is a sex chromosome. 48 chromosomes would be 2 trisomies...if one was a trisomy of chromosome 21 and the other trisomy involved one of the sex chromosomes this would probably produce a living offspring. Other trisomies tend to have more negative effects and it is unlikely that multiple trisomic individuals would survive.
Which term describes processes by which cells with identical genotypes become structurally and functionally distinct from one another?
The term that describes processes by which cells with identical genotypes become structurally and functionally distinct from one another is differentiation. Regulatory proteins can exert their effects during translation.
Is it true or false that a natural selection acts on phenotypes not genotypes?
It doesn't. Phenotypes are viable or not in a given environment, and this influences whether the corresponding genotypes get passed on. Selection works on genotypes via the effects of their expression, their phenotype. The answer you may be looking for is that phenotypes maladapted to their environment have less babies, and pass on less copies of their genes. "Natural selection" is the whole process over generations. "Selection" may refer to misadapted bodies/phenotypes reproducing less due to illness, hunger, bad quality territories, dying earlier, etc.
Ignoring the effects of crossing over what proportion of a woman's eggs contain only chromosomes she received from her mother?
1 in 2^23 or 8,388,608
How many chromosomes does a little person have?
The typical causes of dwarfism are not missing chromosomes (haploid 23, diploid 46) but rather a gene mutation (or autosomal dominant genes) that express as conditions such as achondroplasia and hypochondroplasia. Either condition can result in disproportionate bone growth among other effects.
Can a person with 45 or 48 chromosomes survive?
Someone with 45 chromosomes can survive if the missing chromosome is a sex chromosome. 48 chromosomes would be 2 trisomies...if one was a trisomy of chromosome 21 and the other trisomy involved one of the sex chromosomes this would probably produce a living offspring. Other trisomies tend to have more negative effects and it is unlikely that multiple trisomic individuals would survive.
What counters the effects of pepper spray?
milk apparently does the trick
Which term describes processes by which cells with identical genotypes become structurally and functionally distinct from one another?
The term that describes processes by which cells with identical genotypes become structurally and functionally distinct from one another is differentiation. Regulatory proteins can exert their effects during translation.
What are the genotypes of a cow?
Genotype is the particular alleles at specified loci present in an organism. Genotype effects on body temperature in dairy cows under grazing conditions in a hot climate including evidence for heterosis. Its reflect two effects. First, Swedish Red Holstein had higher vaginal temperatures than the other genotypes in the late morning and afternoon but not after the evening milking. Secondly, Jersey Holstein had lower vaginal temperatures than other genotypes in the late morning and afternoon and again in the late night and early morning. Results point out that there are effects of specific genotypes and evidence for heterosis on regulation of body temperature of lactating cows maintained under grazing conditions and suggest that genetic improvement for thermotolerance through breed choice or genetic selection is possible.
What are the effects of human sex chromosomes on sex determination?
If you have a Y, you're a male... if you don't, you're a female
How do differing numbers of chromosomes evolve without deleterious effects to individuals so that for instance Chimpanzees have 48 chromosomes yet humans have 46?
Chromosomal fusions and chromosomal duplication may lead to decreased or increased numbers of chromosomes with minimal loss of genes.
What happens when a fetus has 3 cromizones instead of 2?
a "normal" human being should have a total of 46 chromosomes. 23 from mom, 23 from dad. if something goes wrong during meiosis, the chromosomes may not be separated normally and a gamete (sex cell, known as sperm or egg) will have either too few or too many chromosomes. this is known as aneuploidy. the effects of aneuploidy on the zygote will vary depending on what chromosomes you are talking about. in the case of chromosome #21, having one extra is called "trisomy 21" which leads to the condition known as down syndrome. chromosome pairs 1-22 are a person's autosomes. the 23rd pair are sex chromosomes. aneuploidy affecting the sex chromosomes can have various effects, depending on what chromosomes are inherited. as you can see, the effects of aneuploidy depend on the specific chromosome number/pair. aneuploidy usually is not fatal.
Is it true or false that a natural selection acts on phenotypes not genotypes?
It doesn't. Phenotypes are viable or not in a given environment, and this influences whether the corresponding genotypes get passed on. Selection works on genotypes via the effects of their expression, their phenotype. The answer you may be looking for is that phenotypes maladapted to their environment have less babies, and pass on less copies of their genes. "Natural selection" is the whole process over generations. "Selection" may refer to misadapted bodies/phenotypes reproducing less due to illness, hunger, bad quality territories, dying earlier, etc.
How many years long a woman can lactate after child birth?
The correct answer......is 6.5 Long-term health effects apparently
Ignoring the effects of crossing over what proportion of a woman's eggs contain only chromosomes she received from her mother?
1 in 2^23 or 8,388,608
Can guinea pigs eat ground elder and are then any side effects?
Apparently....? http://www.damheadnursery.co.uk/advice/tip-of-the-week-ground-elder/
Is cornstarch healthy?
yes... corn starch is healthy, however there are a few side effects apparently.. :) its categorised in the same group as butter, eggs, etc. :)
