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Len [333]
3 years ago
14

Which of the following is not a way that sexual reproduction increases genetic diversity?

Biology
1 answer:
cricket20 [7]3 years ago
5 0

Answer:

Combined parenting leads to faster reproduction

Explanation:

Genetic diversity or variations in the physical appearance of organisms is caused by genetic or environmental factors. Reproduction brings about variation through gamete formation, fertilization and mutations.

During prophase 1 of meiosis, homologous chromosomes pair to form bivalents. The crossing over at the chiasmata results in new gene combination and variations.

Fertilization permits parental genes to be brought together. This causes variations in members of the same family.

Mutation is the spontaneous change in genetic make-up. These changes may be inherited by offspring bringing variations. However, combining parenting does not increase genetic diversity.

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Answer: Mitochondria are present in the cells of all types of aerobic organisms like plants and animals, whereas Chloroplast is present in green plants and some algae, protists like Euglena.

Explanation:

4 0
3 years ago
A second action potential cannot be generated until ________.
Bingel [31]

Answer:

"Action potential is a rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane with a characteristic pattern."

It is the mode through which a neuron transports electrical signals.

Explanation:

  • Option - (a) is the best choice to choose from,
  • <u>The refractory period :</u>

A second action potential cannot occur until the membrane has recovered or reestablished, this is the refractory period. The absolute refractory period coincides with inactivation of voltage-gated sodium channels which makes it impossible to generate another nerve impulse.

5 0
3 years ago
The arthropods superficially resemble earthworms in that both groups have _____, yet the two are distinctly different because ar
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Have prominently segmented bodies...have jointed appendages
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3 years ago
I’m doing a project about Thailand what is one really nice spot you should visit give me a description.
Darina [25.2K]

Thailand is a kingdom in Southeast Asian country and  Thailand is known for his tropical beaches, ancient places and the figures of Buddha and the official language of Thailand is Thai and here we will discuss about the places to visit in Thailand

<u>Explanation:</u>

<u>1.Thailand Island</u>

  • Thailand Island is known for its wonderful and attractive beaches throughout the world, and it is known for his party atmosphere on the beach.
  • And there are three main sets of  the island   and the Phuket is the most developed and longest island in Thailand.

<u>2.Bangkok:</u>

  • Bangkok is the capital city of Thailand and it mostly consists of high buildings, ancient temples, busy market streets lined up with lots of vendors and Bangkok is always a jostled place to visit

<u>3.Chiang Mai</u>

  • Chiang Mai is one of the places in Thailand attracted by the tourist, and lots of tourists wish to explore the pretty and beautiful landscapes and people explore the adventures with the ethnic group of hill climbers

<u>4.Ayuthaya</u>

  • Ayuthaya was a splendid site in Thailand which consists of more than four hundred temples and the places were founded in 1350 and it is a major attraction for tourist and visitors

5 0
3 years ago
In Drosophila, genes a and b control body size and color, respectively. Large body (a+) is dominant over miniature (a), and gray
frutty [35]

Answer:

1

Female gametes:

ab= 0%

ab+=0%

a+b=0%

a+b+=0%

for the miniature phenotype to occur, it is necessary to contain two recessive characters and the female must have both for it to occur, if it is homozygous for b + it will have 2 alleles b +, understanding that the female is aab + b it will only occur gametes ab +

.

2. Phenotype

Miniature body + gray=25%

Large body +gray = 50%

Large body +ebony = 25%

Miniature body +ebony =0%

As the crossing cannot occur in males, the gametes it can produce are: ab + and a + b. Although the crossing can occur in women. The gametes produced are: ab +, a + b, ab and a + b +.

the crossing occurs only in the females generating the gametes ab +, a + b, ab and a + b +

The genotypes corresponding to:

Punnet graphic

large gray body: a + ab + b, a + ab + b +, a + a + b + b

big body and ebony: a + a + bb, a + abb

miniature and gray body: aab + b +, aab + b

6 0
3 years ago
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