All categories

4 years ago

Which conditions are necessary for natural selection to occur? Select all of the answers that apply

Biology

1 answer:

alex41 [277]4 years ago

7 0

Answer:The question is not complete.

The condition are:

Variation of trait.

Differential reproduction.

Traits passed from parent to offspring.

Explanation:

Natural selection is refers to characteristics or traits posses by organisms that will make it to survive and reproduce in it's environment thereby passing those traits to it's offsprings. The theory of natural selection was proposed by Charles Darwin. There are four conditions that allow natural selection to take place and they are; reproduction, variation in characters or trait, heredity and trait passed from parent to offspring.

You might be interested in

Need help really bad?

ArbitrLikvidat [17]

Answer:

The correct answer is B.

Explanation:

1/3 of 100 is 33.3. 35 is about one third.

7 0

4 years ago

Read 2 more answers

If an allele is fixed in a gene pool, then all individuals in the population are homozygous for that allele. True False

Kobotan [32]

Answer: I'm pretty sure it would be false Correct me if i'm wrong

Explanation:

7 0

4 years ago

Describe the location of the digestive enzymes produced by the small intestine, and explain how these cooperate with pancreatic

Karolina [17]

Answer:

The pancreas contains exocrine glands that produce enzymes important to digestion. These enzymes include trypsin and chymotrypsin to digest proteins; amylase for the digestion of carbohydrates; and lipase to break down fats.

Explanation:

3 0

3 years ago

What are the components needed in order for an experiment to be valid? Identify these components in the following experiment: A

MakcuM [25]

Well for it to be valid you are going to need a hypothesis,control,and variables. The control should be the plant food since it stays constant. And the variables should be the 2 different plants.

4 0

4 years ago

Read 2 more answers

-Huntington's

Juliette [100K]

A pedigree is the representation of family history. 1) I.1, II.2, II.3, II.7, III.3 / 2) Dominant / 3) Six / 4) 2 girls, 1 affected / 5) niece-uncle and grandma-grandson

---------------------------

Huntington's disease is an autosomal dominant affection.

It is expressed by heterozygous individuals, meaning that only one copy of the altered gene is enough to express the phenotype.

The mutated gene is the dominant one.

I will answer these questions according to the attached pedigree.

A pedigree is the representation of family history through which it is possible to follow the inheritance pattern of certain traits.

To correctly interpret a pedigree, we need to consider that,

Squares represent males or men,
Circles represent females or women.

Solid figures represent affected individuals,
Empty figures represent normal individuals.

Roman numbers indicate generations.

Individuals can be identified using numbers, genotypes, names, or others.

1. Which members of the family above are afflicted with Huntington's Disease?

I.1 ⇒ Man of the first generation

II.2, II.3, II.7 ⇒ Two women and one man of the second generation

III.3 ⇒ One woman of the third generation.

2. There are no carriers for Huntington's Disease- you either have it or you don't. With this in mind, is Huntington's disease caused by a dominant or recessive trait?

Huntington's disease is caused by a dominant allele. So a single altered gene is enough to express the affection.

3. How many children did individuals l-1 and 1-2 have?

They had six children.