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Misha Larkins [42]
3 years ago
6

Which question is a testable

Biology
1 answer:
podryga [215]3 years ago
3 0

Answer:

A testable question is one that can be answered by designing and conducting an experiment. The answers to a testable question can be observed and measured. Hypothesis- a testable explanation of an observation. A hypothesis is NOT just an educated guess about what you think will happen.

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What is the definition of zygote??
dedylja [7]
A diploid cell resulting from the fusion of two haploid gametes
7 0
3 years ago
In guinea pigs, black fur (B) is dominant over white fur (b) and rough fur (R) is dominant over smooth fur (r). A cross between
kvv77 [185]

Answer:

2. independent assortment.

Explanation:

According to law of independent assortment, any allele of a gene governing one trait may assort with just any other allele of another trait. As a result of which different combinations of phenotypes may arise.

According to the question given:

black fur (B) is dominant over white fur (b)

rough fur (R) is dominant over smooth fur (r)

A cross between BbRr x BbRr will produce 16 off-springs with genotypes mentioned as under:

BBRR = 1 → Black fur, rough fur

BBRr = 2 → Black fur, rough fur

BBrr = 1 → Black fur, smooth fur

BbRR = 2 → Black fur, rough fur

BbRr = 4 → Black fur, rough fur

Bbrr = 2 → Black fur, smooth fur

bbRR = 1 → White fur, rough fur

bbRr = 2 → White fur, rough fur

bbrr = 1 → White fur, smooth fur

It may be noted here that there are 16 progeny with 4 types of phenotypes mentioned as under:

Black fur, rough fur = 9

Black fur, smooth fur = 3

White fur, rough fur = 3

White fur, smooth fur = 1

We are able to get these results just because of so many allelic combinations formed out of the law of independent assortment.

Rest of the options like intermediate inheritance, multiple alleles and codominance do not apply on these results.

Intermediate inheritance is when we get a blended trait that is grey color but no such phenotype was observed.

Multiple allelism is when there is an existence of a third type of phenotype which is entirely different from both the phenotypes which we didn't observe here.

Codominance is when both the alleles show equal impact like if the guinea pigs had a phenotype which had patches of white and black color then it could be codominance. But here we did not observe any such phenotype.

6 0
3 years ago
Which muscles are used for shallow breathing and deep breathing. And what difference does it make?
zavuch27 [327]

Answer:

i am not that much of science lover but i there u go

Explanation:

During quiet breathing, the diaphragm and external intercostals must contract. A deep breath, called diaphragmatic breathing, requires the diaphragm to contract. As the diaphragm relaxes, air passively leaves the lungs. A shallow breath, called costal breathing, requires contraction of the intercostal muscles.

i hope it helped

3 0
3 years ago
This is for an exam, please help!
mihalych1998 [28]

Answer:

1st C or D 2nd 3

Explanation:

Good Luck I hope this helped.

7 0
3 years ago
What is an adaptation
ehidna [41]

Answer:

A adaptation is the action or process of adapting or being adapted

Explanation:

is mostly when a animal is adapted to something.

7 0
3 years ago
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