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Alexus [3.1K]
2 years ago
9

Definition of evolution

Biology
2 answers:
Anton [14]2 years ago
4 0

Answer:

Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection.

Ganezh [65]2 years ago
4 0

Answer:

the change in the features of the species over generations that makes the organism adaptable to the changes that occur in it's physical environment.

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Which advancement in technology has helped cut down on waste?
Alina [70]

The answer is D. You are welcome.

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3 years ago
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When a male pig from a line of true-breeding (homozygous) black, solid-hooved pigs was crossed to a female from
natita [175]

Answer:

When a male pig from a line of true-breeding (homozygous) black, solid-hooved pigs was crossed to a female from a breed (homozygous) of red, cloven-hooved pigs, their several progeny all looked alike with regard to color and hooves. These progeny were all mated to members of the same breed as their red, cloven-hooved mother pig. The offspring from this final cross were: 11 black, cloven-hooved; 8 black, solid-hooved; 14 red, cloven-hooved; and 10 red, solid-hooved. For each of these two genes (coat color and hoof type) determine which allele is the dominant one. Explain your reasoning. What were the phenotypes of the progeny produced by the first mating in this problem.

3 0
3 years ago
The four most abundant elements needed by the human body are carbon, hydrogen, oxygen, and nitrogen. because these are needed in
jek_recluse [69]

The four most abundant elements needed by the human body are carbon, hydrogen, oxygen, and nitrogen because these are needed in large amounts to support our cells, these are referred to as bulk elements.

Oxygen is the most essential element required by our body. The body requires oxygen in the form of gas which is inhaled by the air around us. All the cells in a human body require oxygen which is transported by the blood inside.

Cell is the most basic and fundamental unit of life. It can be of two types: prokaryotic and eukaryotic. Prokaryotic cell is the primitive one with no true nucleus and eukaryotic cell has a true nucleus and all the cell organelles. Generally eukaryotic cells require abundant amount of oxygen.

To know more about cell, here

brainly.com/question/12129097

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4 0
1 year ago
The _____ is a layer of the embryo, which will become the circulatory system, bones, muscles, excretory system, and reproductive
nekit [7.7K]

Answer;

Mesoderm

The mesoderm is a layer of the embryo, which will become the circulatory system, bones, muscles, excretory system, and reproductive system.

Explanation;

-The germ layers develop early in embryonic life, through the process of gastrulation. An inner layer, called endoderm, and an outer layer, called ectoderm and a middle layer called mesoderm.

-The embryonic endoderm develops into the interior linings of two tubes in the body, the digestive and respiratory tube. the lining of the follicles of the thyroid gland and the epithelial component of the thymus.

-Ectoderm develops into parts of the skin, the brain and the nervous system. Mesoderm gives rise to bones, muscles, the heart and circulatory system, and internal sex organs.

4 0
3 years ago
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Which cross shows both parents having two different alleles for each of two different genes?
shtirl [24]

Answer:

The correct option is Number 1. AaBb x AaBb

Explanation:

Genes can be described as basic hereditary units. The genes are made up of DNA.

A gene carries two alleles for a particular trait. These alleles are present at the same loci in the homologous chromosomes. If the two alleles are similar then they are termed as homozygous e.g AA, BB. If the alleles for a trait are different then they are termed as heterozygous e.g Aa and Bb.

7 0
3 years ago
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