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sveta [45]
4 years ago
15

Two heterozygous red flowers (white flowers are recessive) are crossed

Biology
1 answer:
e-lub [12.9K]4 years ago
4 0
It would be: Rr × Rr
Result of cross would be: 1RR, 2Rr, 1rr

So, it's genotypic ratio = 1:2:1
Phenotypic ratio = 3:1

Hope this helps!
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In a tropical forest some leaves are dark green and some are light green. In a population of caterpillars, homozygous dominant d
Sedbober [7]

Answer:

This is an example of "Disruptive selection".

Explanation:

<em>Disruptive selection</em> occurs when <em>selective pressure</em> <em>favor homozygous</em>. In equilibrium, <em>the two alleles might be present or one of them might be lost</em>. If an environment has two extremes, then in these environments, both alleles are presented in homozygous.  

The disruptive selection causes an <em>increase</em> in the two types of <em>extreme phenotypes over the intermediate forms</em>. Limits between one extreme and the other are frequently very sharped. Individuals belonging to one phenotype can not live in the same area as individuals belonging to the other phenotype, due to the traits differences between them, competition, or predation.

Populations show two favored extreme phenotypes and a few individuals in the middle. Individuals who survive best are the ones who have traits on the <u>extremes forms</u>.  Individuals in <u>the middle</u> are not successful at survival or reproduction.

<em>Color</em> is very important when it comes to <em>camouflage</em>. Dark green caterpillars that live in dark foliage and light green caterpillars that live in light foliage can <em>hide from predators</em> more effectively and will live the longest. Intermediate colored green caterpillars that don't camouflage or blend into either will be eaten more quickly.

6 0
3 years ago
Read 2 more answers
Hello, i came to say hello
stealth61 [152]

hi man how are you doing today

3 0
2 years ago
A burn or injury to a tissue is caused by
Sav [38]

 A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

Hope This Helps!       Have A Nice Day!!

4 0
3 years ago
The development of refrigeration and frozen-food technology has benefited society in different ways. Identify two ways in which
skelet666 [1.2K]

Answer:

The development of refrigeration and frozen-food technology has benefited society in the following ways.

1) Refrigerator helps the people to protect the food substance from the infection of microorganisms such as bacteria and fungi.

2) Refrigerator helps in increasing the shelf life of many food materials. Some food substance have very short shelf life which can be increased by placing in the refrigerator.

Chicken sausages, nuggets and meat boll are the products that developed because of frozen -food technology.

3 0
3 years ago
a man with pku marries a woman without any alleles for pku. what is the probability that their child will inherit pku?​
zvonat [6]

Answer:A man with pku marries a woman without any alleles for pku.There is little possibility that a child will inherit PKU

<u>Explanation: </u>

PKU Is Phenylketonuria results in less metabolism of amino acid. It might lead to a mental disorder or behavior problems. It is mostly Genetic.

If only one parent is suffering from it then there is little possibility that it will pass on to a child but if both the parents are having the problem of PKU then there are more chances that the child will also develop such a problem. It can be treated if we catch it at an early stage.

7 0
3 years ago
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