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Musya8 [376]
3 years ago
13

Explain how the inheritance patterns of many traits (such as petal color in snapdragons, or skin color in humans) cannot be acco

unted for by Mendelian genetics.
Biology
1 answer:
pantera1 [17]3 years ago
3 0

Answer:

Petal color in snapdragon is an example of incomplete dominance and deviates from Mendel's law of dominance.

Skin color in humans exhibits a continuous variation and is regulated by more than one genetic loci.

Explanation:

Two alleles of a gene do not always exhibit the dominant-recessive inheritance as shown by Mendel. The alleles controlling the petal color in Snapdragon exhibit incomplete dominance since the allele "R" is not able to produce enough pigment in heterozygous condition to completely mask the effect of the recessive allele "r" Therefore, the heterozygous genotype "Rr" gives pink color to petals.

Mendel showed that each genetic trait is regulated by one gene and exhibit discontinuous variations. This is not followed by skin color in humans which is a polygenic trait with multiple genes regulating it. Here, a range of phenotype is present which is regulated by the sum total of the dominant alleles of all the genes involved controlling the melanin production.

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Cellular respiration involves two phases. The anaerobic phase does not involve oxygen, while the aerobic phase does. Where does
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While the majority of anaerobic (without oxygen) and aerobic (with oxygen) respiration occurs in the cytoplasm and mitochondria, respectively, of the cell.

<h3>What is cellular respiration?</h3>

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3 0
1 year ago
An individual carries a heterozygote (two diff alleles on same gene) which will be located:
swat32

Answer:

B) On the same place on the same chromosome.

Explanation:

Both alleles are located on the same chromosome and present at the same place because genes come in pair. Each pair of gene is located at a specific place on a chromosome. If the two alleles present at a specific location are similar to each other, it is called homo-zygous while on the other hand, if both alleles are different from one another, they are considered as hetero-zygous.

6 0
3 years ago
The response of plants to periods of light and dark is called ______________. photoperiodism nocturnal variation daily activity
Alex73 [517]

Answer:

Photoperiodism

Explanation:

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7 0
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Considering that males can have Klinefelter (XXY) syndrome, XYY, and normal XY chromosomal combinations, and females can have Tu
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Answer:

C) maleness results from the minimal presence of one Y chromosome

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  • From the given question, it can be clearly observed that in males irrespective of whichever syndrome they have a Y chromosome is always present whereas in females Y chromosome is not present.
  • Hence, one cal conclude that whenever the Y chromosome is present the individual acquires male characters.
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