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Anettt [7]
3 years ago
10

Consider the two male oryx that are shown below. Which of Charles Darwin’s main points is depicted in the image? Organisms withi

n a population compete with each other to survive. Over time, beneficial variations will be passed on to future generations. More offspring are produced than can be supported by an environment. All organisms within a population have an equal chance for survival.
Biology
2 answers:
chubhunter [2.5K]3 years ago
8 0

overt time, beneficial variations will be passed on to future generations.

NISA [10]3 years ago
5 0

The correct answer is option B, that is, over time; the beneficial changes will be conducted on to the future generations.

The reason is as Darwin considered that the organisms exhibiting the greatest level of fitness would survive and would reproduce more generally in comparison to those with a lower level of fitness.

Survival of the fittest is a phrase that arose from the theory postulated by Darwin as a manner of illustrating the procedure of natural selection.


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In a unique species of plants, flowers may be yellow, blue, red, or mauve. All colors may be true-breeding. If plants with blue
Zolol [24]

Answer:

F1) 100% bbRr, red flowered plants.

Explanation:

<u>Available data:</u>

  • flowers may be yellow, blue, red, or mauve
  • colors may be true-breeding
  • the cross of blue-flowered plants with red-flowered plants, produce plants that have yellow flowers
  • F2 generation: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve.

Knowing that the phenotypic ratio is 9:3:3:1, we can assume that there are two genes involved in the flower color expression. We can name these genes B and R with a dominant and a recessive allele each (B, b and R, r respectively).

According to the first cross, we might establish the following genotypes:

1st Cross: blue-flowered plant     x     red-flowered plant

Parentals)         BBrr                     x                bbRR

Gametes)     Br, Br, Br, Br                         bR, bR, bR, bR

F1) 100% BbRr, yellow plants

Parentals)   BbRr     x     BbRr

Gametes) BR, Br, bR, br

                BR, Br, bR, br

Punnett square)     BR       Br        bR          br

                  BR     BBRR    BBRr   BbRR     BbRr

                  Br      BBRr     BBrr     BbRr      Bbrr

                  bR     BbRR    BbRr    bbRR      bbRr                    

                  br      BbRr     Bbrr      bbRr      bbrr

F2)  9/16 yellow ---> 1/16 BBRR + 2/16 BBRr + 4/16 BbRr + 2/16 BbRR  

       3/16 blue ------> 1/16 BBrr + 2/16 Bbrr

       3/16 red---------> 1/16 bbRR + 2/16 bbRr

       1/16 mauve ----> 1/16 bbrr    

So,

  • Yellow-flowered plants: BBRR, BBRr, BbRR, BbRr
  • Red-flowered plants: bbRR, bbRr
  • Blue-flowered plants: BBrr, Bbrr
  • Mauve-flowered plants: bbrr

According to these genotypes, the second cross would be like following,

2nd Cross: true-breeding red-flowered plants with true-breeding mauve flowered plants.                

Parentals)          bbRR       x        bbrr

Phenotype)       Red                   Mauve

Gametes)   bR, bR, bR, bR      br, br, br, br

Punnett square)    bR       bR        bR        bR                    

                    br    bbRr     bbRr    bbRr     bbRr

                    br    bbRr     bbRr    bbRr     bbRr

                    br    bbRr     bbRr    bbRr     bbRr

                    br    bbRr     bbRr    bbRr     bbRr

F1) 100% bbRr, red flowered plants.

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Answer: C

Explanation:

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Witch of the following is true of modern cell theory?
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What's the options they gave you to chose from?

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In bird dogs, barking while trailing (B) is dominant to silent while trailing (b). A heterozygous
Wittaler [7]

Complete question:

In bird dogs, barking while trailing (B) is dominant to silent while trailing (b). A heterozygous barking trailer is bred to a silent female trailer. Various offspring resulted.

  • What is the genotype of the male animal?
  • What is the genotype of the female animal?
  • How many different genotypes are possible among the offspring?
  • What proportion of the offspring will be heterozygous barkers?

Answer and Explanation:

<u>Due to technical problems</u>, you will find the complete question, answer, and explanation in the attached files.

3 0
3 years ago
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