B. Cytoplasm has a plasma membrane.
E. Eukaryotic cells have a nucleus.
P.
E
E.
E. Chloroplast is an organelle used to carry out Photosynthesis.
B. Ribosomes are found in both eukaryotic cells and prokaryotes.
1. Is the child is born male then the then the probability is 50%, and if female then the child will be normal provided father is normal.
2. Probability of me receiving the affected gene is 50%.
3. If the mother is normal then 0% chance that the child will receive mutated allele in his genome.
<h3><u>Explanation:</u></h3>
Duchenne muscular dystrophy is sex linked recessive disease which is seen as hereditary disease. This disease has a mutated gene which is present on the X chromosome. It produces proteins that results in muscular dystrophy.
A. As the mother's brother is affected with the disease so we can assume that the mother is a carrier of this disease. Hence one of the X chromosomes of mother is affected. If the child is female then 1 X chromosome will be received from father and other one from mother. So if the father is normal then even if the child receives mutated X chromosome from mother then also she will be normal. So a female child want to be a diseased one if the father is normal. If the child is male then and there is a 50% chance that the X chromosome he is receiving from mother is the mutated one. Show the chance of child being diseased is 50%.
B. As the mother's brother is deceased then the mother is taken to be a carrier. Hence one of the X chromosomes of mother is mutated and other one is normal. Hence the chance of receiving the mutated allele from mother is becomes 50%.
C. As the father's brother is having disease but father is not having the disease then fathers X chromosome must be normal because if the mutated allele was present then father would have been diseased as well. Hence is the mother is normal then the chance of the child being diseased becomes 0% .
Answer:
A. If seed shape did not have a clearly recessive form
Explanation:
To study inheritance patterns, Mendel studied a few characteristics of pea plant -e.g. pea colour, shape, plant height. These characteristics had to be very clear dominant and recessive forms to distinguish between, otherwise detecting the patterns would not have been obvious.
For example, if crossing a wrinkled seed plant with a smooth seed plant made a semi-wrinkled plant, Mendel would not have been able to study the inheritance of dominant and recessive traits.
1) anatomical similarities
2) embryonic development
3) vestigial structure
4) comparative anatomy