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ikadub [295]
3 years ago
14

What are the two types of nucleotides

Biology
2 answers:
PilotLPTM [1.2K]3 years ago
8 0
Thymine, cytosine, adenine, and guanine
sergey [27]3 years ago
3 0
There are two groups of bases: Pyrimidines: Cytosine and Thymine each have a single six-member ring.
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When a person's red blood cells have neither A nor B antigens, what is the blood type of this person?
stepladder [879]
You would have type AB blood type
8 0
3 years ago
Achondroplastic dwarfism is a dominant genetic trait that causes severe malformation of the skeleton. Homozygotes for this condi
AleksandrR [38]

Answer:

Jane: Aa

Matthew: aa

Explanation:

Jane is a heterozygous woman, which means that she is dominant for this genetic trait while Matthew is homozygous that did not inherit the achondroplastic dwarfism trait from his parents, that is why he is alive.

If we draw a Punnett square, we can see that some of their children will inherit the trait while others will not.

<u>   ║ a      ║ a</u>

<u>A  ║   Aa ║Aa</u>

a  ║ aa    ║ aa

5 0
3 years ago
You discover a population of mustard plants and find it to be at Hardy–Weinberg equilibrium with respect to the R locus. Suppose
natulia [17]

Answer:

The fraction of heterozygous individuals in the population is 32/100 that equals 0.32 which is the genotipic proportion for these endividuals.

Explanation:

According to Hardy-Weinberg, the allelic frequencies in a locus are represented as p and q, referring to the alleles. The genotypic frequencies after one generation are p² (Homozygous for allele p), 2pq (Heterozygous), q² (Homozygous for the allele q). Populations in H-W equilibrium will get the same allelic frequencies generation after generation. The sum of these allelic frequencies equals 1, this is p + q = 1.

In the exposed example, the r-6 allelic frequency is 0,2. This means that if r-6=0.2, then the other allele frequency (R) is=0.8, and the sum of both the allelic frequencies equals one. This is:

p + q = 1

r-6 + R = 1  

0.2 + 0.8 = 1

Then, the genotypic proportion for the homozygous individuals RR is 0.8 ² = 0.64

The genotypic proportion for the homozygous individuals r-6r-6 is 0.2² = 0.04

And the genotypic proportion for heterozygous individuals Rr-6 is 2xRxr-6 = 2 x 0.8 x 0.2 = 0.32

5 0
3 years ago
Some proteins catalyze biochemical reactions. If a genetic defect prevented a protein catalyst from being produced which of the
Maslowich
I believe option B would be the correct choice because, without a catalyst, the reaction will be either too slow or will not happen at all as it would not acquire a fitting activation energy for the reaction. 
If you would like to know why the other options are incorrect, please read on: 
Option A is incorrect because since proteins are specific in nature, so other protein cannot be replaced, for some other chemical reaction. 
Option C is not correct it is a genetic defect that the protein does not form, and all cells are genetically identical, a reaction cannot take place in any parts of the body. 
And finally, option D would be wrong because if a forward reaction does not take place, a backwards reaction will not occur. 
I hope this answer has helped, and I apologise if somehow this answer finds itself to be incorrect. Good luck on your quiz or homework. :) 
6 0
3 years ago
The human body uses a variety of organic molecules as sources of energy. In what order does the body usually access these source
horsena [70]

There are 3 sources of energy, which are also known as macronutrients ,carbohydrates, protein, and fat.

Of these three, carbohydrates are the body’s preferred source of energy. Carbohydrates break down into glucose, which is an immediate source of energy especially for the brain and muscles. The macronutrient proportions recommended for general, healthy diet are: 45-65% of energy (or calories) from carbohydrates, 10-20% of energy (or calories) from protein and 20-35% of energy (or calories) from fat.
4 0
3 years ago
Read 2 more answers
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