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erik [133]
3 years ago
12

How do the climates of a tropical desert and a temperate desert differ

Biology
1 answer:
zimovet [89]3 years ago
7 0
A tropical deserts climate varies with rain and humidity while a temperate stays the same
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Which would most likely cause a forced migration due to loss of habitat?
lapo4ka [179]

Answer:

That'll be a "Long term change".

Goodluck with your test! :)

6 0
3 years ago
Read 2 more answers
Consider a cross between a plant with two flower colors, yellow and red. Yellow (Y) exhibits complete dominance over red (y). It
Aneli [31]

Answer:

1) option a is correct. (260+270)/1545

<em>(Note about this option: In the statement, it is written as </em><em>(260+270) 1545. </em><em>Lacks the division symbol, </em><em>/ </em><em>)</em>

2) From these results one can conclude that the two genes are linked (option a)

Explanation:

To know if two genes are linked, we must observe the progeny distribution. If heterozygous individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. If we observe a different distribution, phenotypes appearing in different proportions, we can assume linked genes in the double heterozygote parent.  

We might verify which are the recombinant gametes produced by the di-hybrid, and we will be able to recognize them by looking at the phenotypes with lower frequencies in the progeny. Phenotypes with the highest frequencies represent the parental gametes.

To calculate the recombination frequency, we will use the following formula: P = Recombinant number / Total of individuals.  

In the present example:

Parental)        YySs                        x                 yyss

Gametes)  YS parental type                        ys, ys, ys, ys

                 ys parental type

                 Ys recombinant type

                 yS recombinante type

The total number of individuals in the offspring: 1545

Phenotypic class Number of offspring  

  • 500 Y-S- (parental)
  • 515 yyss (parental)
  • 260 Y-ss (recombinant)
  • 270 yyS- (recombinant)

According to this information, the phenotypic frequencies of the progeny differ from the phenotypic ratio 1:1:1:1. We can assume then, that t<u>hese genes are linked. </u>

The recombination frequency is:

P = Recombinant number / Total of individuals

P = 260 + 270 / 1545

P = 530/1545

P = 0.343

The genetic distance between genes is 0.343 x 100= 34.4 MU.

6 0
3 years ago
Manta rays, sting rays, and eagle rays are similar to lampreys in that they have cartilagenous skeletons. how are they different
Marina CMI [18]
I think they are different in that they have jaws. Rays are predominantly marine and are found in all the oceans. Many are slow-moving bottom dwellers. They include, Manta ray which is one of the most known type of rays, Spotted eagle ray (pacific ocean), sting ray  among others. They are about 15 types of rays in the oceans.  Sharks, Lampreys and rays, like all fishes they are aquatic, water-breathing vertebrates with a brain and spinal cord, fins, plate-like pairs of internal gills, and paired sense organs. 
6 0
3 years ago
After the mutation, The DNA sequence reads atcgttcatt. Which type of mutation occurred?
Mashcka [7]

Answer:

the type of mutation is called insertion

8 0
3 years ago
Where do convection currents take place? Is it in the lithosphere or the asthenosphere?
SOVA2 [1]

Convection currents are present in the air – A good example of convection current is the warm air that rises towards the ceiling in your house. The process happens as the warm air is said to be less dense than that of the colder air. Another good example of convection current is wind. The lithosphere is the solid, outer part of the Earth.

7 0
3 years ago
Read 2 more answers
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