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Vilka [71]
4 years ago
8

The ___ chromosome is the sex determiner for many species a. Female b. Male

Biology
2 answers:
suter [353]4 years ago
7 0
Jmale chromosome because it contains X and Y whereas women contains only X and X
swat324 years ago
4 0

Answer:

a. Male

Explanation:

The male chromosome is the sex determiner for many species, because the female chromosome is usually doubled (homozygous). For example, us humans it is XX. However, the male chromosome is usually different (heterozygous). For example, us humans it is XY. Therefore, the mother will always pass, in our case a X chromosome. However, the father can pass either the male determining gene (Y) or the female determining gene (X).

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3 0
3 years ago
In humans having a wide jaw (W) is completely dominant to having a narrow jaw (w). Having large teeth (L) is completely dominant
Orlov [11]

Answer: The man's genotype is WwLt while the woman's genotype is wwLt.

Explanation: From the information given above, W is the allele for wide jaw, w is the allele for narrow jaw, W is completely dominant to w, L is the allele for large teeth while t is the allele for small teeth.

The man has wide jaw but his mother has a narrow jaw, since narrow jaw is recessive the man must have inherited one recessive allele for narrow jaw from his mother who has two recessive alleles for narrow jaw. Therefore since the man has wide jaw, he must be heterozygous for wide jaw (having one dominant allele for wide jaw and one recessive allele for narrow jaw), his genotype for wide jaw is therefore Ww. The man is heterozygous for teeth size, this means that he has one dominant allele for large teeth and one recessive allele for small teeth. His genotype for teeth size is Lt. Therefore the man's genotype is WwLt.

The woman has a narrow jaw, this means that she has two recessive alleles for narrow jaw (ww) and she is heterozygous for large teeth size, this means that she has one dominant allele for large teeth and one recessive allele for small teeth (Lt). Therefore, the woman's genotype is wwLt.

5 0
3 years ago
Name 2 life processes the respiratory system carries out​
stiv31 [10]

Answer:

Internal and external respiration

Explanation:

Internal respiration occurs inside your body and is an exchange of your body's gasses with its blood and tissues. External respiration is similar, but gasses are exchanged specifically with the lungs.

A more simple response could be breathing(ventilation) which is the process or air going in and out of the lungs.

I hope this helps you!

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How are the carbon cycle and water cycle connected
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