3 years ago

The respiratory system is part of the excretory system?

Biology

2 answers:

Alex3 years ago

5 0

Answer:

circulatory system

Explanation:

blsea [12.9K]3 years ago

3 0

Answer:

no, respieatory system is used for breathing and a few other functions

Explanation:Excretory system is used for accumulation of food that contains dangerous chemicals

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FromTheMoon [43]

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2 years ago

Eye color is also determined by genes. Brown eyes are dominant, and blue eyes are recessive. What must be true for two brown-eye

Troyanec [42]

Answer:

The brown-eyed parents must be HETEROZYGOUS to produce a blue-eyed child

Explanation:

This question involves a single gene coding for eye color in humans. The allele for brown eyes (B) are dominant over the allele for blue eyes (b). This means that an individual that is heterozygous (Bb) will phenotypically have a brown eyes.

According to this question, a blue-eyed child (bb) will be produced when two brown-eyed parents are HETEROZYGOUS (Bb) for the eye color trait. This means that each of the parent donated the recessive allele (b) to produce the (bb) offspring. Please find the punnet square attached.