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kotykmax [81]
2 years ago
12

Which type of tissue in a blastula gives rise to skin and eyes in an animal

Biology
1 answer:
noname [10]2 years ago
5 0

Answer:

The ectoderm develops into the surface ectoderm, neural crest, and the neural tube. The surface ectoderm develops into: epidermis, hair, nails, lens of the eye, sebaceous glands, cornea, tooth enamel, the epithelium of the mouth and nose.

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In a recessive disorder, a person will only have the disorder if they have one copy of the allele
Gnesinka [82]

Answer:

False

Explanation:

Since it's a recessive disorder that means the presence of the dominant allele will overshadow the recessive if it's present. Two recessive alleles have to be present in order for the person to have the disorder.

4 0
3 years ago
Describe the effects of the various antibiotic drugs you used. Were they all equally effective at controlling bacterial growth?
Kipish [7]

Answer:

Basically, most   antibiotic drugs  are not  effective in controlling bacterial growth. The potency of any antibiotic drugs is a measure of the magnitude of  diameter of the  bacterial growth . <u>This is because the diameter   is the measurement of the bacterial growth around the antibiotic drugs used to control it multiplication, and therefore a  measure  of how effective  it  can controls the population</u> Thus a small diameter around the antibiotic agent is a proof that it suppressed the growth effectively and can effectively be used to control  the bacteria, While  a large diameter is an indication of low effectiveness of the drug.

Based on this analogy, penicillin with wide usage for control  of bacteria growth  with  diameter of 3mm, is the most effective antibiotic drugs.However, Erythromycin which is also widely used control growth with diameter of 5mm  or 6mm depending on   type of bacterial.

Therefore, the least 3mm  diameter presented by penicillin is an indication that , antibiotic drugs  are not effective enough, and further research need to be done to control growth of bacteria and therefore its   pathogenic  effects.  

Explanation:

8 0
3 years ago
Which process makes it possible for all the major organs of the body to be formed by week 10 of human development?
zimovet [89]

Embryonic development involves process of formation and development of an embryo. In humans, during the early stages, 10 weeks of embryonic development, all the major body organs are formed.

6 0
3 years ago
Which process that occurs during meiosis contributes to a germ cell having unique genetic material?
Gennadij [26K]
I do believe that it is C. crossing over :) I hope that is correct, it seems like the only plausible answer. 
8 0
3 years ago
MATCH THE FOLLOWING ITEMS.
nata0808 [166]

Here are the correct sequenced items...

  1. largest class - <u> carbonates </u>
  2. found in caves - <u> sulfides </u>
  3. contain oxygen - <u> oxides </u>
  4. contain sulfur - <u> silicates </u>
8 0
2 years ago
Read 2 more answers
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