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timofeeve [1]
3 years ago
15

Which of the following is/are true?

Biology
1 answer:
LenKa [72]3 years ago
3 0

Answer: Option A ,Band C.

Explanation:

Sympatric speciation is the evolution or isolation of new species from the original populations of species occupying in the same geographical area. Sympatric speciation commonly occur due to sexual selection of mates can cause reproductive barriers or isolation which keep gene pools separate. A plant with extra set of homologous chromosomes is an example of sympatric speciation.

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Cross a person who does not have freckles and is heterozygous for dimples with a person who has
Alja [10]

Answer:

1. 1/2

2. 1/2

3. 1/4

Explanation:

Let the allele for freckles be A or a while that of dimples be B or b.

A person without freckles but heterozygous for dimples = aaBb

A person who has freckles (whose mother has no freckles) but no dimples = Aabb

      aaBb    x    Aabb

Offspring

4 AaBb - freckled and dimpled

4 Aabb - freckled and non dimpled

4 aaBb - non freckled and dimpled

4 aabb - non freckled and non dimpled

1. <em>Probability that the parents will have a dimpled child</em> = 8/16 or 1/2

2. <em>Probability that they will have a child with freckles</em> = 8/16 or 1/2

3. <em>Probability that they will have a child with freckles and dimples</em> = 4/16 or 1/4

<u>See the attached image for the Punnet's square analysis of the cross</u>

4 0
3 years ago
How is the orientation of Earth's magnetism recorded in rocks on the ocean
Eddi Din [679]

Answer:

I'm pretty sure it's C.

Explanation:

8 0
3 years ago
Read 2 more answers
13C and 14C are isotopes of 12C, which has 6 electrons, 6 protons, and 6 neutrons. What is the arrangement of subatomic particle
Dovator [93]
6 electrons, 6 protons, and 8 nuetrons;  the protons and electrons are always going to be the same as each other, only the nuetron changes 
8 0
3 years ago
Assess whether urban or rural areas are more likely to have high levels of smog.
yan [13]

The urban areas are more likely to have smog than the rural areas.

Urban area can be referred to as the town or city with advances an developments. Since the urban areas have more population density, more electronic items, vehicles and also industries, that is the reason why they are more likely to produce the smog or any other form of pollution.

Smog is a type of air pollution formed dye to the combination of smoke and fog. The most common source of smog is the burning of coal. This can be either due to industries or the fuels of vehicles. Fog can be of two types: Photochemical smog and industrial smog.

To know more about smog, here

brainly.com/question/15728274

#SPJ4

6 0
2 years ago
WILL GIVE BRAINLIEST IF RIGHT
snow_lady [41]

Answer: The answer I got was Penicillin!

Explanation:

I know that marine biotechnology has came out with other antibiotics including squalamine and cephalosporin. This is an educated guess but based on the other answer choices Penicillin sounds more reasonable!!

6 0
4 years ago
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