<h2><u>
Full Question:</u></h2>
In the family tree below, people with the recessive trait of attached earlobes are shaded gray.
What must be true about the person labeled "A"?
A. It is a male with at least one dominant allele.
B. It is a male with two dominant alleles.
C. It is a female with at least one dominant allele.
D. It is a female with two dominant alleles.
<h2><u>Answer:</u></h2>
Its a male with atleast one dominant allele.
Option A.
<h3><u>Explanation:</u></h3>
The gene for the attached earlobe is recessive while the gene for the free earlobes is dominant. In the phylogenetic tree, we can see that both the father and mother aren't having attached earlobes. So both of them are having atleast one dominant allele which makes them have free earlobe.
In the F1 offsprings, one of the female and a male is having free earlobes. So both of them have atleast one dominant allele. The 2nd female is having an attached earlobe. So both the recessive allele have come form one parent each. So both of them are heterozygous.
Thus, the male marked as A atleast have one dominant allele. He can be a homozygous dominant, but the probability is 25%.
You're correct because when birds hit their max altitude it's harder to breathe and to minimize the time of there flight they store immense amounts of oxygen in their lungs.
Ribosome- Both animal cells and plant cells
Endoplasmic Reticulum -Both animal cells and plant cells
Golgi Apparatus- Both animal cells and plant cells
Cell wall- Plant cells only
Vacuoles-Both animal and plant cells
Lysosomes- Both animal and plant cells
Mitochondria- Both animals and plant cells
Cell Membrane- Both animals and plant cells
Cytoplasm-Both animal and plant cells
Chloroplasts-Plant cells only
Hope it helps have a wonderful day ; )
Answer:
take the shape of the container it is in.
Explanation:
<span>1. What bacteria causes strep throat?
Streptococcus
2. What are the oldest life forms on earth?
Archaebacteria
3. What type of bacteria causes food poisoning?
Salmonella
4. What part of the bacteria cell helps it stick to surfaces?
Pilli
5. Name two foods that bacteria help make:
cheese, yogurt
6. What does “decompose” mean?
Break down
7. What is the control center of the bacteria cell?
DNA
8. Where do Archaebacteria live?
Flagella
9. To what kingdom do common bacteria belong?
Extreme environments
10. List one structure that is found in a bacteria cell that is also found in a human cell.
Eubacteria</span>
