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marysya [2.9K]
3 years ago
14

Which of the following causes the change in seasons on Earth?

Biology
2 answers:
Nana76 [90]3 years ago
7 0
C.

I learned this as well before
Kobotan [32]3 years ago
6 0

Answer:

the answer is c

Explanation:

I learned it befo3

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Its a- hydrogen carbon oxygen nitrogen phosphorus sulfur !
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3 years ago
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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
Independent assortment of chromosomes is a result of _____.
Ann [662]

Answer:

the "second law of Mendel", or principle of independent distribution, states that during the formation of gametes, each pair of alleles segregates independently of the other pairs.

Explanation:

Mendel's second Law is also known as the Law of Segregation, also as the Law of Equitable Separation, and also as the Law of Disjunction of the Alleles. This Second Law of Mendel is fulfilled in the second filial generation, that is to say, from the parents to the first generation, the First Law of Mendel is fulfilled, and after the children of the first generation this Second Law of Mendel is fulfilled.

This 2nd Law of Mendel, speaks of the separation of the alleles in each of the crossing between the members of the first generation, who would now become parental of the second generation, for the formation of a new child gamete with certain characteristics.

Since each allele is separated to constitute features that do not belong to the first filial generation, but to that of the parents. That is to say that many of the most obvious features in the recessive allele would be present when a generation leaps. All this in relative proportion to the number of individuals in the second subsidiary generation.

3 0
3 years ago
What is the sac within the cytoplasm that stores water, food, waste products and other materials?
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C. Allantois stores waste products produced by an embryo

hope this helps you out good luck.!!!!

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3 years ago
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Consider the chromosome. Which is indicated by the letter a?
NISA [10]

My answer will be that the letter "A" in the chromosome refers to "adenine", which is considered as one of the five nitrogenous bases that are part of the nucleic acids (DNA and RNA), which was named in 1885 by Albrecht Kossel.

5 0
3 years ago
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