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S_A_V [24]
2 years ago
8

flowers of orchid species ophrys bombyliflora look and smell like female bumblebees. this attracts the male bumblebees flying ne

arby to the flowers. thus, pollen sticks to the head and abdomen of the bumblebee, which causes pollination. this orchid species is only pollinated by these bees, which is why the species is known as bumblebee orchids. what mode of evolution is represented by this example?
Biology
2 answers:
wel2 years ago
7 0
<span>Coevolution in light of the fact that the two species would advance because of each other. Blossoms and their pollinators must advance together. For instance, if the blossom has a change that never again draws in the honey bees, it won't recreate. At that point the hummingbird would need to locate another sustenance source.</span>
spin [16.1K]2 years ago
4 0
<span>The correct answer is adaptive radiation. This is a process in which all the organizams diversify rapidly from an ancestral species into a multitude of new forms. This process is happens more frequently when there is a change inthe environment, which makes new resources available</span>
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Maya examined several fossils to date Earth events from 248 million years ago till today. Which of these charts best records the
cupoosta [38]

Answer:

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Explanation:

7 0
2 years ago
HELP ME FAST PLEASE!!!!
SVETLANKA909090 [29]
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2 years ago
A Xw+m+Xwm female was mated to a XwmY male. Out of 1000 total F1 progeny there were 230 flies that were otherwise wild type with
deff fn [24]
In order to calculate the distance between two alleles/genes that are found in the same chromosome, we need to know how often crossing-over happened (recombination frequency). We know from the text that white eyes were linked to miniature wings and that wild type eyes were linked to wild type wings, so any phenotype that's contrary to these parent combinations are a result of crossing-over. We know then that 230 flies + 240 flies were a result of such recombination. To calculate the recombination frequency we only need to divide these flies (total of recombinant flies) by the total of flies in the offspring and turn it into percentage.
\frac{230+240}{1000}=0.47
0.47*100%=47%
47 map units is the distance between the genes <span>for eye color and wing length.</span>
7 0
2 years ago
Which of these statements correctly explains the difference between an atoll and a lagoon?
nika2105 [10]

Answer:

The correct answer is B. An atoll is a coral island formed on top of a volcano, and a lagoon is the water enclosed within it.

Explanation:

8 0
2 years ago
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Explain the basic steps in the first half of photosynthesis (light-dependent reactions). Describe the movement of electrons and
Cerrena [4.2K]

Answer:

Photosynthesis is the process by which plants make their own food in the presence of sunlight by utilizing carbon-dioxide and water and produces oxygen and energy.

The process of photosynthesis has two types of reactions: light-dependent reactions and light-independent reactions.

The light-dependent reactions occur in the thylakoid membranes of chloroplasts in which plants use light energy to form ATP and the reduced electron carrier NADPH.

In this reaction, photosystem II (P700) absorbs lights energy and passed it to reaction center. this energy is then is transferred to photosystem I (P680), that pump an electron to a high energy level. The high-energy electron then travel to an electron transport chain and releases energy. this released energy pump H+  ions into the thylakoid interior from the stroma and build a gradient  H+ ions move through gradient and they pass through ATP synthase resulting in the formation of ATP.

The higher energy electron as moves into an electron transport chain, the electron is passed to NADP+ to form NADPH.

8 0
2 years ago
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