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Lunna [17]
4 years ago
10

In fruit flies, L = long wings and I = short wings. When a long winged fly is crossed with a short winged fly, the off spring ex

hibit a 1:1 ratio. What is the genotype of each parent fly?
Biology
1 answer:
stellarik [79]4 years ago
3 0

Answer:

Genotype of long winged fly is Ll

Genotype of short winged fly is ll

Explanation:

Given

Allele for long wing trait is "L"

Allele for short wing trait is "l"

When a long winged fly is crossed with a short winged fly, half of the offspring have long wings and other half have short wings as the ratio is 1:1

Let us say that the genotype of long winged fly is Ll

and the genotype of short winged fly is ll

The cross between the two will produce following offspring

Ll * ll

Ll, Ll, ll, ll

Out of four off spring two have long wings (Ll)

and the other two have short wings (ll)

Thus the ration of long to short wing offspring is 2:2 i.e 1:1

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The alternation of generations life cycle alternates between haploid and diploid stages. Describe the structures and processes t
svlad2 [7]

Answer:

Alternation of generations (also known as metagenesis) this type of life cycle that occurs in those plants and algae in the Archaeplastida and the Heterokontophyta that will have distinct haploid sexual and diploid asexual stages. A multicellular haploid gametophyte with n chromosomes alternates with a multicellular diploid sporophyte with 2n chromosomes is form in these group, made up of n pairs.

A mature sporophyte will produces haploid spores by meiosis, a process which reduces the number of chromosomes to half, from 2n to n.

In the haploid cell the spores germinate and grow into a haploid gametophyte. At maturity, the gametophyte produces gametes by mitosis, which does not alter the number of chromosomes.

5 0
3 years ago
Phosphate from atp is removed to make adp and a free phosphate molecule
Lunna [17]

Answer:

ATP is a nucleotide consisting of an adenine base attached to a ribose sugar, which is attached to three phosphate groups. ... When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP).

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3 years ago
Imagine walking through a tropical rainforest. You notice that there are different types of trees, birds, insects, and other org
Ksenya-84 [330]

Answer:

B. Organisms in each ecological system have evolved in that system and have adaptations suited for that environment.

Explanation:

According to natural selection theory, organisms need to continuously adapt and evolve within an environment or risk being wiped away from that environment.

Organisms that are not able to adapt to an environment are gradually replaced by those that have the capability to adapt and survive in that environment.

Those that are able to survive go ahead to reproduce and give rise to offspring with inherent ability to survive while those that cannot survive die off.

The correct option is B.

8 0
3 years ago
Read 2 more answers
Help Asap. i also need explanations to go with the answer
nlexa [21]

Answer:

D. In an ocean heated by volcanic activity

Explanation:

Most of Earth was covered in water, early organisms weren't evolved enough to walk on land at the time. There are some organisms that feed off of volcanic activity and use it as an energy resource and would adapt to the heat.

<em>"Hot spots create volcanoes on the seafloor. If these volcanoes rise above sea level to become islands, and if they occur in tropical waters, coral reefs will form on them. Since the volcanoes are cones, the reef forms in a circle around the volcano."</em>

<em>-</em><u>https://courses.lumenlearning.com/earthscience/chapter/ocean-organisms/</u>

<em>"Discovered only in 1977, hydrothermal vents are home to dozens of previously unknown species. Huge red-tipped tube worms, ghostly fish, strange shrimp with eyes on their backs and other unique species thrive in these extreme deep ocean ecosystems found near undersea volcanic chains."</em>

<em>-</em>https://ocean.si.edu/ocean-life/invertebrates/hydrothermal-vent-creatures

7 0
3 years ago
If the membrane potential at the axon hillock becomes subthreshold an action potential will be fired.
kotegsom [21]
True bc it’s True !!!!
8 0
3 years ago
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