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3 years ago

Which of these has only prokaryotic cells?

Biology

2 answers:

Dahasolnce [82]3 years ago

7 0

D) bacteria because they are simple organisms

dezoksy [38]3 years ago

6 0

D is the correct answer hope it helped

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Which of the following is a possible long-term consequence of two organisms occupying the same niche? a. Local extinction b. Coo

Lemur [1.5K]

Niche refers to the role of the microorganism or a living thing in an ecosystem. When two organisms occupying the same niche, the possible long-term consequence isA. local extinction. This is because the relationship is competition which can outlast the other. Eventually, when the environment is changed, the organisms adapt too which erases the original attributes.

8 0

3 years ago

Read 2 more answers

Cystic fibrosis is an autosomal recessive disorder. In one population, the frequency of affected individuals (A 2 A 2) is 0.0004

Simora [160]

Hardy Weinberg Equilibrium

Explanation:

Hardy Weinberg Equilibrium formula for allelic frequency is: $p+q=1$

Hardy Weinberg Equilibrium formula for genotypic frequency is: $p^2+q^2+2pq=1$

Here, $p$ =frequency of dominant allele

$q$ =frequency of recessive allele

$p^2$ =frequency of dominant genotype

$q^2$ =frequency of recessive genotype

$2pq$ =frequency of heterozygous genotype

frequency of affected individuals=0.0004(given)

here,affected individuals means the one's having Cystic Fibrosis and since it is recessive disease so we can write frequency of recessive genotype as: $q^2$ =0.0004

If $q^2$ =0.0004 $q$ will be 0.02;frequency of recessive allele will be 0.02

Using the formula $p+q=1$

$p+0.02=1\\p=1-0.02=0.98$

hence,frequency of dominant allele will be 0.98

Frequency of dominant genotype will be $p^2=(0.98)^2=0.9604$
Frequency of heterozygous genotype will be $2pq=2*0.98*0.02=0.0392$

7 0

3 years ago

A point mutation is shown in the mutated DNA sequence below. Will this mutation affect the

klemol [59]

Answer:

A. Yes, because an amino acid change has occurred.

Explanation:

The sequence given states that the codon CCG is changed to CAG. According to the codon table (attached), CCG codes for proline whereas CAG codes for Glutamine. Therefore, change in mutation has resulted into the change in amino acid. This would lead to the formation of a different protein.

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3 years ago

Humans autosomal cells have two copies each of 23 unique chromosomes. Match each of the following cell division events and cell

zvonat [6]

Answer:

Please see below

Explanation:

The number of chromatids have been stated with the respective event when it occurs in that particular number in the following way:

23 chromatids

primary oocyte arrested prior to ovulation

spermatozoa

46 chromatids

oogonium prior to S phase

92 chromatids

secondary polar body

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2 years ago

HHow do you some cells become brain cells and others become skin cells when the DNA and all the cells is exactly the same in oth

Bezzdna [24]

Explanation:

In the early days of development, in an embryo, the cells are pluripotent and can differentiate into any kind of cell of the organism. As the embryo develops, autocrine and paracrine signaling between the cells of the embryo causes the cells to migrate to particular regions of the embryo and begin differentiating into respective parts of the organism. This signaling causes differential silencing of particular genes of the cells depending on the type of cells they will differentiate into. As the embryo develops into a fully grown organism, these cells lose potency (except for stem cells) and become fully differentiated into respective limbs or organs of the organism.

Learn More:

For more on embryology check out;

brainly.com/question/11484135

brainly.com/question/12777212

#LearnWithBrainly

5 0

3 years ago