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Nataly [62]
2 years ago
14

Which event is evidence of a chemical change?

Biology
2 answers:
ExtremeBDS [4]2 years ago
7 0

Answer:

its b

Explanation:

defon2 years ago
3 0

Answer:

B everthing else is phisical

Explanation:

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How many bones does the human body have
Marrrta [24]
206 bones

I hope this helps :)
4 0
2 years ago
Read 2 more answers
Match the term in Column 1 to the corresponding statement in Column 2.​
klasskru [66]

Looks like the order they appear in is the correct order.

1. Question-wording bias

2. Under-coverage

3. Response bias

6 0
3 years ago
The gene frequency for a dominant allele is 0.68 and the recessive allele is 0.39. What percent of the population has a homozygo
Alinara [238K]

Answer:

15.21 %

Explanation:

If we recall the basic formula of Hardy-Weinberg's equilibrium ; we have the following below:

p + q = 1

p² + 2pq + q² = 1

where;

p = frequency of the dominant allele in the population

q = frequency of the recessive allele in the population

p² = percentage of homozygous dominant individuals

q² = percentage of homozygous recessive individuals

2pq = percentage of heterozygous individuals

Given that p= 0.68 and q = 0.39

the percentage of the homozygous recessive genotype (q² ) will be

(0.39)² = 0.1521

= 0.1521 × 100

= 15.21 %

∴ the percentage of the population that has a homozygous recessive genotype = 15.21 %

5 0
3 years ago
Embryology concerns the structural changes that occur in an individual from conception through old age. true false
Jlenok [28]

False: Development of gametes and embryos.

Development is a human process in the sense that people, not material factors, drive development. The energy and ambition of those who seek development are the driving forces behind the development. People's consciousness can determine the direction of development.

- Can be a source of employment. - Contribute to national development and promote the economy. - Helps develop infrastructure. - Contribute to the preservation of cultural heritage.

Helps businesses attract and retain top talent, improve productivity, and help businesses generate more profit through learning and development.

learn more about Development here.  brainly.com/question/11352260

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7 0
1 year ago
Mendel's law of segregation predicts the following specific phenotypic ratios among the F, and Fa progeny from crosses between t
aleksandrvk [35]

Answer:

C. Fi 1:0, F2 3:1

Explanation:

Firstly, Mendel's law of segregation states that the alleles of a gene will randomly separate into gametes during gamete formation. In this case involving a single trait, hence, a single gene. Mendel crossed two purebreeding plants i.e. homozygous plants that produced different phenotypes for the same gene. He obtained his offsprings which he called F1 offsprings. He realized that all the F1 offsprings expressed only one phenotype. For example, when he crossed homozygous tall (TT) and short (tt) plants, he got F1 offsprings that were all tall.

He then self-crossed these F1 offsprings to produce a F2 offsprings that had a phenotypic ratio of 3:1 i.e. 3tall, 1short plant. He concluded that the alleles of the single gene had segregated into the gametes but one allele was capable of masking the expression of another, as seen in the heterozygous F1 offsprings that were all tall (Tt).

Hence, he obtained a 1:O ratio for his F1 offsprings then a 3:1 ratio for his F2 offsprings.

8 0
3 years ago
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