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Rudiy27
3 years ago
13

Is it possible for two people to have the same phenotype but different genotypes ?

Biology
1 answer:
Dmitrij [34]3 years ago
3 0

Answer:

Same phenotype but different genotype is possible due to presence of dominant allele

Explanation:

A person can have a dominant allele on both the homologous chromosomes  while another person may have single dominant allele and a corresponding recessive allele.

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True or false: In a gel electrophoresis gel, a DNA fragment containing 100 bp (base pairs) would travel faster (and further) tha
vova2212 [387]

Answer: true

Explanation: In gel electrophoresis, the smaller the size/molecular weight of DNA the faster it moves across the gel and vise versa. This is as a result of the pore size of the gel which is usually prepared 1g of agarose in 100ml of distilled water. So a DNA fragment with 1000 base pairs will "struggle" its movement across the gel pore making it mive less faster and further. Movement and molecular weight of DNA are inversely proportional.

3 0
3 years ago
In horses, the allele for a black coat (B) is dominant over the allele for a brown coat (b). A cross between a black horse and a
GaryK [48]

Answer:

Bb X bb

Explanation:

  • It is given that the allele B for the black coat is dominant over allele b for a brown coat.
  • A dominant allele always leads to the expression of the dominant trait in the heterozygous condition. 
  • When a black and brown horse is crossed as given in the question and the result is a brown foal, then the genotype of the brown foal must be bb as the brown coat is a recessive trait. 
  • Since each parent contributes one allele each for a given gene, the black horse must have b allele, and hence must be heterozygous Bb.
  • The cross is shown in the punnett square.

4 0
3 years ago
In a sample of 2,400 people, 1,482 were found to have the dominant (taster) phenotype. Assuming that the population is in Hardy-
Alex_Xolod [135]

Answer:

1128.

Explanation:

The dominant taster phenotype is 1482.

The recessive taster phenotype = 2400 – 1482 = 918 .

Recessive phenotypes = 2400 – 1482 = 918

The recessive phenotype frequency = q² = 918 / 2400 = 0.38.

the recessive allele frequency q = √0.38 = 0.62.

The dominant allele frequency, p = 1-q = 1- 0.62 = 0.38

The heterozygous frequency =  2pq = 2 ×0.38 × 0.62 = 0.47 .

The heterozygous individual in the population = 0.47 × 2400 = 1128.

Thus, the answer is 1128.

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3 years ago
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Here you need to put if you have any questions about the material you are learning. If you have none i would consider putting that you have none.
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Match the mineral categories to their best descriptions.
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B) sulfate mineral: Compounds that have a sulfur atom surrounded by four oxygen atoms

C) halide minerals: Contain elements like fluorine, bromine, iodine, or chlorine combined with metals. Stable salt is an example of this type of mineral

D) carbonate mineral: Compounds made up of a carbon atom that is bordered by three oxygen atoms.

7 0
2 years ago
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