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12345 [234]
4 years ago
6

The allele for brown eyes is dominant to the allele for blue eyes. Which of the following best explains how two brown-eyed paren

ts could produce a blue eyed child?
A-- One parent must be carrying the recessive allele for blue eyes.
B-- One parent must have had only blue eyed parents.
C-- Mutations after fertilization could alter gene sequences and change alleles.
D-- Each parent must be carrying the recessive allele for blue eyes.
Biology
2 answers:
AURORKA [14]4 years ago
5 0
D, although it’s a 1 in 4 chance.
Rasek [7]4 years ago
4 0
I would say A). I hope its right.
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Viefleur [7K]
2 <span>different allele combinations would be found in the gametes produced by a pea plant who’s genotype was RrYY</span>
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3 years ago
How do scientists decide when to change or modify their understanding of a particular topic?​
Natali5045456 [20]

Answer:

they carry out experiments to understand it

Explanation:

Scientists raise hypotheses which are tested by experiments made under controlled conditions in order to explain a particular topic. When a hypothesis is confirmed by the experimental data, the evidence obtained from this experiment provides the basis to increase the scientific knowledge about a particular issue. In consequence, experimentation can be considered as a critical step in the scientific method and research aims to advance knowledge of a particular phenomenon by confirming a hypothesis, which must be testable (i.e. verifiable as a result of further experimentations).

6 0
3 years ago
2 Points
alina1380 [7]

Answer:

The answer is:

B. Worms consuming the blood from mammals.

Algae isn't causing any harm to the sloth, rather its providing it with camouflage to hide from predators. Both creatures benefits since the algae gets to eat any parasites and other things in the sloths fur, plus they get a free ride and home in the process. The sloth isn't harmed and is helped by the algae since it provides camouflage (mutualism).

Tree frogs aren't causing harm to the trees since they are only using them to hide from predators, the tree serves as protection for the frogs and aren't harmed in the process (commensalism).

Two fish protecting each other from predators aren't harming each other in any way, rather they are protecting each other from another animal that wants to eat them (mutualism).

The worms however are harming the mammals because they are consuming the mammals blood, this is parasitism since one animal is benefiting and the other is harmed.

Hope this helps! :)

8 0
3 years ago
Chromosome duplications and deletions frequently result in abnormal phenotypes or inviable gametes. Which factor is a major cont
kherson [118]

Chromosome duplications and deletions frequently result in abnormal phenotypes or inviable gametes. Gene dosage is modified is a major contributor to this phenomenon.

In the field of genetics, we can define gene dosage as the quantitative measure or copies of a particular gene that is present in an organism. Abnormalities in the gene dosage at a particular location can cause severe damage to the resulting phenotype.

Gene dosage can lead to chromosome duplications if the copy number or gene product is more and it can cause deletions if the copy number or gene product is less. Such complications will result in abnormal phenotypes or inviable gametes. For example, in Down's syndrome, the person has a modification of the 21st chromosome as there is one extra 21st chromosome present. This leads to a variety of diseases and defects in the person.

Although a part of your question is missing, you might be referring to this question:

Chromosome duplications and deletions frequently result in abnormal phenotypes or inviable gametes. Which factor is a major contributor to this phenomenon?

a. Recessive diseases are unmasked by additional copies.

b. The genes are found in a novel arrangement.

c. Gene dosage is modified.

To learn more about deletions, click here: brainly.com/question/2033407

#SPJ4

4 0
1 year ago
Explain why science is important to society
ratelena [41]

Answer:

Science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards.

Explanation:

7 0
3 years ago
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