Answer:
B
Explanation:
Birds are vertebrates and they also have feathers and reproduce by laying eggs. Additionally, they are also warm blooded.
Answer:
II and III
Explanation:
<em>I. All sons of these parents will be a hemophiliac.
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<em>
II. A son who suffers from hemophilia received the hemophilia allele from his mother.
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<em>
III. Half of the daughters of this cross are predicted to be hemophiliacs.</em>
Assuming the haemophilia allele is represented by h, the alternate form being H.
A woman that is a carrier will have the genotype
.
A man who suffers from haemophilia will have the genotype 
Crossing both of them:
x
= 
From the result of the cross, the following can be deduced:
- Half or 50% of the sons from the couple will be haemophiliacs.
- Any son that suffers from haemophilia received the allele from the mother.
- Half or 50% of the daughters from this cross will be hemophiliacs.
Hence, statements II and III are true.
Answer:
Explanation:
The first one is Full Moon
The second one is New Moon
The third one is Lunar Eclipse
The last one is Solar Eclipse
A pure substance made up of only one type of atom is an element