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andreev551 [17]
3 years ago
15

A student was observing slides of cell division. In one of the slides, he noticed loosely coiled chromatin depicting DNA duplica

tion. Which phase of the cell cycle could it be?
S phase



Metaphase



M phase
Biology
2 answers:
tatuchka [14]3 years ago
5 0

The correct answer is:

S phase

Explanation:

S phase (synthesis phase) is the part of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase. Accurate and accurate DNA replication is needed to counter genetic exceptions which often lead to cell death or disease. DNA replication occurs during this S (synthesis) phase. Gap 2 (G2): During the gap between DNA structure and mitosis, the cell will remain to grow and design new proteins.

RSB [31]3 years ago
5 0
Out of the choices given, the phase of the cell cycle is the S Phase. The correct answer will be A. 
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A Pea plant that is homozygous for inflated pods are heterozygous for round seeds is crossed with a plant that is heterozygous f
Norma-Jean [14]
The answer is False!

P - dominant allele for inflated pods
p - recessive allele for inflated pods
PP - homozygote with inflated pods
Pp - heterozygote with inflated pods
pp - homozygote with inflated pods

S - dominant allele for round seeds
s - recessive allele for wrinkled seeds
SS - homozygote with round seeds
Ss - heterozygote with round seeds
ss - homozygote with wrinkled seeds

1. <span>A Pea plant that is homozygous for inflated pods are heterozygous for round seeds: PPSs
2. A</span><span> plant that is heterozygous for inflated pods and a homozygous for wrinkled seeds: Ppss

Let's look at their genotypes separately, and cross them that way:

Parents:              PP       x      Pp
Offspring:     PP      PP      Pp     Pp
All of the offspring will have the same phenotype (100% = 1). So, this trait does not affect phenotypic ratio

</span>Parents:              Ss       x      ss
Offspring:     Ss      Ss      ss     ss
Half of the offspring will have wrinkled seeds and half of them will have round seeds: 50% : 50% = 1 : 1

So, the phenotypic ratio is not  1 : 3
7 0
3 years ago
The approximate water temperature at a depth of 125 meters would be closest to: (1) 15°C (2) 8°C (3) 13°C (4) 3°C
photoshop1234 [79]

Answer:

(2) 8 ºC

Explanation:

The range of the temperatures from the uppermost layers of the ocean - around 100 to 150 m -, which in this case is 125 m, is not always constant as they fluctuate due to the atmospheric heating and cooling, and also due to seasonal variations.

However, if we base our answer on the table below, we would determinate that the approximate water temperature at a depth of 125 meters is 8 ºC (2). This is because, if we observe, the temperature at 100 m is 12 ºC, while at 150 m is 5 ºC. Therefore, the temperature at 125 m should be higher than 5 ºC and lower than 12 ºC, that is 8 ºC.

7 0
3 years ago
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Aneli [31]

Explanation:

Consumers must consume, or eat, other organisms to get matter and energy to live and grow. Consumers have to eat other consumers or plants to get food. Humans are consumers. We consume many kinds of plants and other organisms.

4 0
3 years ago
‌‌How‌ ‌can‌ ‌competition‌ ‌contribute‌ ‌to‌ ‌evolution‌ ‌through‌ ‌‌natural‌ ‌selection‌?‌ ‌
lisabon 2012 [21]

Answer:

Competition is an interaction between organisms or species in which both the organisms or ... According to evolutionary theory, this competition within and between species for resources is important in natural selection. However, competition may ... Competition can cause species to evolve differences in traits.

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3 years ago
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4 0
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