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Ghella [55]
2 years ago
6

Two trends in the evolution of early humans are…

Biology
1 answer:
aivan3 [116]2 years ago
8 0
I would say the answer is D
You might be interested in
When Mendel crossed a plant homozygous for round seeds to another plant homozygous for wrinkled seeds, he found that all the pro
deff fn [24]

Answer:

a. The allele for round seeds is dominant to the allele for wrinkled seeds.

Explanation:

Mendel found that when two pure breeding plants that differ from each other with respect to one genetic trait are crossed, all the progeny express the phenotype of one parent. The phenotype of the other parent is not expressed in the progeny. He concluded that the genetic trait that is expressed in the F1 generation is dominant over the other which is masked in this generation.

A cross between pure breeding plants for round seeds and the wrinkled seeds obtained all the round seeded progeny. This meant that the phenotype "round" was dominant over the phenotype "wrinkled". If the allele "R" gave round phenotype and the allele "r" imparted wrinkled phenotype, the allele "R" was dominant to the "r".

3 0
3 years ago
Which of the following is not a mechanism for biological evolution
elena55 [62]
If you're answers consist of:
<span>
a. mutation 
b. genetic drift 
c. inheritance of acquired characteristics 
d. natural selection

Then you're answer is D.) Natural Selection 

Hope this helped!! :)</span>
5 0
3 years ago
How do genetics (genetic predisposition) and the environment work together to cause substance abuse in individuals? What is the
vampirchik [111]

Answer: The drug abuse is influenced by the environment and exerts influence on the gene expressions.

Explanation:

The genetic make up of the person is decides, which genes will be expressed and develop a trait in an individual. But this genetic expression can be influenced by the environmental factors like food, exposure to sunlight, and others. This study which relate environment with the genetic make up is called epigenetics. No person is drug addict by birth but the consumption of drug can influence the genetic make up and traits in a abuser. So here, the environment is influencing the genetic basis of a abuser.

6 0
3 years ago
At what age does the early detection of mental health issues begin?
gogolik [260]

Answer:

Adolescent

Explanation:

Globally about 50% of mental health issues and conditions start at the age of 14. Most of them are not detected and treated. One of the most common causes of mental issues is depression among adolescents. The common factors leading to mental distress among adolescents include exploration of sexual identity, exposure to different social behaviours, money and access to technology.

3 0
3 years ago
Earth has a great variety of surface features that are caused by weathering and erosion. Which of the following describes a chan
Sidana [21]

Answer:

Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.

 

Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and erosion. Together, these processes carved landmarks such as the Grand Canyon, in the U.S. state of Arizona. This massive canyon is 446 kilometers (277 miles) long, as much as 29 kilometers (18 miles) wide, and 1,600 meters (1 mile) deep.

 

Weathering and erosion constantly change the rocky landscape of Earth.

Explanation:

HOPE IT HELPS. PLS MARK AS BRAINLIEST

4 0
3 years ago
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