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Serggg [28]
3 years ago
7

Which statement regarding sex chromosome abnormalities is incorrect?

Biology
1 answer:
natta225 [31]3 years ago
7 0

Answer:

Individuals with two X chromosomes and one Y chromosome are abnormally tall females of average  intelligence.

Explanation:

Individuals with this disorder are males.

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A mutation in a polypeptide with the original amino acid sequence of: Met-Ala-Gln-Arg-Glu-Leu results in a mutant with the seque
Nezavi [6.7K]

Answer:

This question lacks options, however, it can be answered based on general understanding of the topic

The answer is SUBSTITUTION MUTATION

Explanation:

A mutation is any change that occurs in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs. One type of mutation is SUBSTITUTION MUTATION, which is a mutation in which one or more nucleotide base is replaced by another in the sequence.

Nucleotide bases are read in a group of three called CODON. Each of these codons specify amino acid. Hence, if the nucleotide base sequence is altered during mutation, the amino acid sequence is altered likewise. In this case where the original amino acid sequence is: Met-Ala-Gln-Arg-Glu-Leu, the mutation affected the nucleotide bases coding for Arginine (Arg), hence changing it to Glycine (Gly).

This means that a base substitution mutation occured, replacing the amino acid Arginine with Glycine in the mutated sequence.

6 0
2 years ago
In a certain plant, tall stems (t) are dominant to short stems (t). a farmer crosses a short-stemmed plant with a heterozygous l
melisa1 [442]

The answers would be:

Genotype                Phenotype

     Tt                      Tall stemmed

     tt                       Short stemmed

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

<u />

<u>You can read on to see how this was done:</u>

Tall stems (T) are dominant to short stems (t).

First figure out the genotypes of the parents. We have a short-stemmed plant and a heterozygous long-stemmed plant cross.

For short stem to occur, you need 2 pairs of short alleles. So the first parent would have a genotype of tt.

Heterozygous long-stemmed means that the parent has one of each allele. So the genotype of the second parent would be, Tt.

Now we can make our Punnett Square.

tt x Tt

<u>       t        t  </u>

<u>T |  Tt  |   Tt</u>

<u>t  |   tt  |   tt</u>

Let's list down the genotypes and phenotypic results.

Genotype        no.         Phenotype

     Tt                 2           Tall stemmed

     tt                  2           Short stemmed

So from that we can answer the other questions:

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

8 0
3 years ago
Symptoms of cholera include all of the following except:
crimeas [40]

Answer: Out of them, the odd one out is increased flow urine because the symptom is little or no urine. Hope that helps

6 0
2 years ago
Read 2 more answers
21. All the following are differences between arteries and veins
Lubov Fominskaja [6]

Answer:

Arteries connect to capillaries and veins don't connect to capillaries

Explanation:

Actually both are connected by capillaries

8 0
3 years ago
Which of these would be the best conductor of electricity that Kimberly would choose?
kolbaska11 [484]

Answer:

B.

Plastic, wood, and glass are all poor conductors. Aluminum along with copper are some of the best electrical conductors

5 0
2 years ago
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