bryanmcmillianjr
26.06.2019 •
Biology
In birds, sex is determined by a zw chromosome scheme that is much like the typical xy scheme seen in humans and many other organisms, except that the system is reversed: males are zz (similar to xx in humans) and females are zw (similar to xy in humans). a lethal recessive allele that causes death of the embryo occurs on the z chromosome in pigeons. what would be the sex ratio in the offspring of a cross between a male heterozygous for the lethal allele and a normal female? a) 1: 1 male to femaleb) 3: 1 male to femalec) 1: 2 male to femaled) 2: 1 male to female
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Ответ:
i think the answer i (D
Ответ:
a sarcodine because it has a pseudopod
The diagram is showing a sarcodine because it has a pseudopod. Sarcodine is a protozoa. These organisms exhibit cytoplasm and use a temporary extension cytoplasmic extension called as pseudopodium, which helps in locomotion and feeding. The shape of these organisms is typically circular or irregular. They may contain more than one nucleus. The food which adheres to the surface of the cell is trapped by the pseudopodium and is digested by the vacuoles.