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Paladinen [302]
3 years ago
6

The atrioventricular valve is:

Biology
2 answers:
attashe74 [19]3 years ago
8 0
A is the answerrrrrrrrrrrr
Mademuasel [1]3 years ago
6 0
A) A flap in the heart located between each atrium and ventricle.
Hope it helps! :)
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Fly species w, found in a certain part of the island, produces fertile offspring with species y. species w does not produce fert
34kurt
Considering the answers;
A. are still sibling species
B. shared a common ancestor more recently with each other than either did with the other two species
C.May merge into a single species if their hybrids remain fertile over the course of many generations.
D. A and B only
E. A, B, and C
The answer will be E. 
If no other species can hybridize, then species W and Y are still sibling species, shared a common ancestor more recently with each other than either did with the other two species and also may merge into a single species if their hybrids remain fertile over the course of many generations. 
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Why must males inherit colorblindness or hemophilia from their mothers?
sdas [7]
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2 years ago
Aerobic respiration happens in what cellular organelle?
kolbaska11 [484]
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4 0
3 years ago
The disease cystic fibrosis (CF) is caused by a mutation to the CFTR gene which affects the respiratory, endocrine, reproductive
Lady bird [3.3K]

Answer: DF508 mutation. A Genetic, Hereditary, Autosomal and Recessive Mutation.

Explanation:

Cystic fibrosis (CF) is a recessive autosomal lethal disease, it is most common on Caucasoid populations. Its diagnosis is suggested by the clinical features of chronic obstructive pulmonary disease, persistent pulmonary colonization (particularly with mucoid Pseudomonas strains), meconium ileus, pancreatic insufficiency with or familiarity history of the disease. The FC gene is large, with about 250 Kb of genomic DNA, 27 exons representing about 5% of genomic DNA; encodes a 6.5 kb transcribed mRNA. This mRNA is transcribed into a protein of 1480 amino acid called CFTR (Regulator Transmembrane Conductance Cystic Fibrosis). When a three-base pair deletion, adenosine-thymine-thymine (ATT) identified in the CFTR gene, exon 10, it results in the loss of a single amino acid phenylalanine at position 508 of the protein. This mutation is called DF508; “D” stands for deletion and “F” for phenylalanine amino acid.

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What makes acid rain chemically
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3 years ago
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